Additives

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Keeping your aquarium in tip-top shape is easy with this incredible assortment of high-quality additives. While some online retailers carry only a handful of additives, at Big Al’s Pets, we offer over 300 different types for your aquarium. These aquarium additives make it easy to keep the water clear and conditioned so your fish stay healthy and happy. Plus, many of our products are on sale at any given time, so it’s easy to keep your tank in great shape while keeping some extra money in your wallet.

Our helpful categories make it easy to narrow down your choices from this vast selection of products. You can quickly choose between biological, freshwater and marine additives to get the correct match for your fish. In addition, you’ll find helpful products like pH buffers and controllers, water clarifiers and water conditioners, all of which will contribute to a healthier underwater habitat for your pets.
  • NutraFin Aqua Plus Water Conditioner
    Protects scales, fins, neutralizes chlorine, chloramines, and undesirable metals. With patented stress relief function with the inclusion of pure herbal extracts. A complete tap water conditioner that improves aquatic environments.

    Price From: USD 4.38

    Price From: USD 4.38

  • NutraFin Waste Control Biological Water Additive
    Helps reduce aquarium maintenance by helping to reduce waste in gravel, power filters, decoration and on interior aquarium surfaces. Rapidly reduces organic waste from overfeeding, fish waste and other decaying material such as plant leaves.

    Price From: USD 6.58

    Price From: USD 6.58

  • Kent Marine Liquid Calcium Reactor
    Kent Marine Liquid Calcium Reactor provides the same results as costly calcium reactor systems without the investment. It will raise aquarium concentrations of calcium, magnesium, strontium, trace minerals, and carbonates (alkalinity/buffering capacity).

    Price From: USD 32.99

    Price From: USD 32.99

  • Tropic Marin Bio-Calcium Actif
    Bio-Calcium Actif is the perfectly balanced calcium additive with stabilizing action, bringing the pH and alkalinity into the ideal range for optimum results in growing coral and calcareous red algae. Supply calcium to corals without harmful substances.

    Price From: USD 27.48

    Price From: USD 27.48

    Out of stock

  • Microbe-Lift Aquarium Nite-Out II
    • This decreases ammonia and nitrite toxins in aquarium water
    • Creates, encourages or evens-out and maintains nitrification
    • Method uses nitrosomonas, nitrospira and nitrobacto strains
    • This formula is specially created to support marine life water

    Price From: USD 3.83

    Price From: USD 3.83

  • Microbe-Lift Special Blends
    • Helps to break down decaying organic matter and cycle elements
    • Reduces maintenance & lowers ammonia and nitrates from water
    • Breaks down protein foam and residue on gravel, plants and rocks
    • Odors will be eliminated and water clarification will be activated
    • Plant growth is naturally stimulated and presents better absorption

    Price From: USD 3.83

    Price From: USD 3.83

  • Kent Marine Iron & Manganese
    Kent Marine Iron & Manganese supplements iron, manganese, potassium, and other micronutrients to spur saltwater macro-algae and freshwater plant growth. Does not contain ingredients that cause undesirable algae growth.

    Price From: USD 8.23

    Price From: USD 8.23

  • Kent Marine Turbo-Calcium
    Kent Marine Turbo-Calcium provides supplemental calcium to reef inhabitants such as corals, snails, hard tube worms and clams, and promotes the growth of purple, pink, and green calcareous algae. Should be used by experienced reef keepers.

    Price From: USD 12.99

    Price From: USD 12.99

  • Kent Marine Cichlid Chemistry
    Kent Cichlid Chemistry is specially formulated to provide natural water chemistry for African Cichlids and other Rift Lake fish without significantly raising pH. Phosphate and nitrate free.

    Price From: USD 12.99

    Price From: USD 12.99

  • Seachem Reef Calcium
    Reef Calcium is a concentrated (50,000 mg/l) bio-available polygluconate complexed calcium intended to maintain calcium in the reef aquarium without altering pH (formulated at pH 8.2).

    Price From: USD 9.49

    Price From: USD 9.49

  • Seachem Reef Complete
    Reef Complete is a concentrated (160,000 mg/l) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in seawater without affecting pH (formulated at pH 8.3). calcium and carbonates are essential to all coral growth.

    Price From: USD 6.19

    Price From: USD 6.19

  • API pH Up
    By neutralizing acidic substances in the aquarium, pH Up effectively makes the water more alkaline. Adjusting pH to the proper level will improve fish health, disease resistance, coloration, and breeding.

    Price From: USD 5.39

    Price From: USD 5.39

  • ATM Outbreak! Marine Premium Biological Maintenance
    • Biological blend keeps aquariums clean and odor free
    • Removes organic buildup and improves water quality
    • Ensures a clean and healthy biofilter
    • Made in the U.S.A.

    Price From: USD 16.48

    Price From: USD 16.48

  • Seachem Reef Plus
    Seachem Reef Plus is a full spectrum reef supplement containing trace elements, vitamins, and amino acids demonstrated to have a positive impact on the growth of corals and other reef creatures. Provides nutrients available from tropical reef waters.

    Price From: USD 9.80

    Price From: USD 9.80

  • Seachem Safe
    • Complete and concentrated dry conditioner
    • Quickly and effectively removes chlorine and chloramine
    • Convert ammonia into a safe, non-toxic form
    • Use at start-up and whenever adding or replacing water
    • Great for both freshwater and saltwater applications

    Price From: USD 10.47

    Price From: USD 10.47

  • Seachem Replenish
    Replenish is a proprietary blend of salts designed to replenish physiologically relevant minerals that are removed by reverse osmosis or deionizing filtration.

    Price From: USD 4.20

    Price From: USD 4.20

  • API pH Down
    Lowers pH and makes aquariums more acidic. Fast-acting, colourless and easy-to-use.

    Price From: USD 4.19

    Price From: USD 4.19

  • API Proper pH 7.5
    Proper pH 7.5 neutralizes chlorine, detoxifies heavy metals, and adds electrolytes to the aquarium. Contains Aloe Vera, a proven natural stress reducer and healing agent. Proper pH 7.5 will lower or raise the pH until 7.5 is reached. pH will not rebound.

    Price From: USD 8.29

    Price From: USD 8.29

  • API Proper pH 8.2
    Proper pH 8.2 neutralizes chlorine, detoxifies heavy metals, and adds electrolytes to the aquarium. Contains Aloe Vera, a proven natural stress reducer and healing agent. Proper pH 8.2 will lower or raise the pH until 8.2 is reached. pH will not rebound.

    Price From: USD 8.29

    Price From: USD 8.29

  • Carib Sea PurpleUp
    Carib Sea PurpleUp is a pink and purple coralline algae accelerator. Since PurpleUp is not a fertilizer, it does not promote the growth of nuisance algae. PurpleUp delivers calcium, strontium, magnesium, and carbonate. Also replenishes iodine.

    Price From: USD 9.88

    Price From: USD 9.88

  • Carib Sea CoralUp
    • Complete reef calcium engineered for skeletal coral growth
    • Patented dual method approach contains real aragonite!
    • Naturally occurring carbonate supports pH of reef systems
    • With an additional supply of iodine, strontium, and magnesium
    • Each 5ml capful of contains over 170,000 ppm of calcium

    Price From: USD 10.99

    Price From: USD 10.99

  • Carib Sea BioMagnet Clarifier
    BioMagnet imparts a positive electrical charge as a bacterial attractant. Quickly seeks out and encapsulates suspended particles, enabling the positively charged particles to be drawn to the filter. The result is crystal clear water, fast!

    Price From: USD 7.68

    Price From: USD 7.68

  • Big Al's Multi-Purpose Water Conditioner
    Big Al's Multi-Purpose Water Conditioner helps repair the damaged tissue of tropical fish and marine fish with a unique formula that contains aloe vera. Dechlorinates source water and neutralizes chloramine- which does not evaporate from water.

    Price From: USD 2.18

    Price From: USD 2.18

  • Big Al's Multi-Purpose Bio-Support
    Big Al's Multi-Purpose Bio-Support stimulates growth of beneficial bacteria that will break down harmful organic compounds that cause dangerous toxic conditions for your fish. Ensures a healthy biological filter, good water quality, and a clean aquarium.

    Price From: USD 2.73

    Price From: USD 2.73

  • Big Al's Multi-Purpose Bio-Clean
    Big Al's Multi-Purpose Bio-Clean reduces the time and need for cleaning power filters, gravel and interior aquarium surfaces. Bio-Clean will dissolve sludge in your aquarium caused by fish waste, over-feeding and other decaying matter.

    Price From: USD 3.28

    Price From: USD 3.28

  • API Stress Coat Marine
    Fish & tap water conditioner. The only marine water conditioner with the healing power of Aloe Vera. Developed for use with a protein skimmer: will not cause foaming. Removes chlorine, chloramines and ammonia from tap water.

    Price From: USD 8.49

    Price From: USD 8.49

  • ATM Outbreak! Freshwater Premium Biological Maintenance
    • Biological blend keeps aquariums clean and odor free
    • Removes organic buildup and improves water quality
    • Ensures a clean and healthy biofilter
    • Made in the U.S.A.

    Price From: USD 3.83

    Price From: USD 3.83

    Out of stock

  • NutraFin Cycle Biological Aquarium Supplement
    Immediately establishes a safe biological aquarium environment, features new high concentration formula, reduces fish loss and establishes essential conditions in new aquarium set-ups. Fast acting responsive ammonia and nitrite elimination.

    Price From: USD 7.68

    Price From: USD 7.68

  • ATM Colony Freshwater Professional Grade Nitrifying Bacteria
    • Instantly cycles aquariums with real nitrifying bacteria
    • Neutralizes ammonia and nitrite spikes naturally
    • Prevents and eliminates "New Tank Syndrome"
    • Made in the U.S.A.

    Price From: USD 4.38

    Price From: USD 4.38

  • Microbe-Lift Reef & Marine Artemiss - 4 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 5.49

    Sale Price USD 4.38

    Regular Price: USD 5.49

    Sale Price USD 4.38

  • Microbe-Lift Reef & Marine Artemiss - 16 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 13.49

    Sale Price USD 12.08

    Regular Price: USD 13.49

    Sale Price USD 12.08

  • Microbe-Lift Gravel & Substrate Cleaner - 8 fl oz
    • Made to clean up organic wastes, like muck & sludge
    • This method will prevent bad toxins from developing
    • Clarifies your aquarium water after 48-96 hours of use
    • Uses cellulosic matter & select biological accelerators

    Regular Price: USD 5.99

    Sale Price USD 5.48

    Regular Price: USD 5.99

    Sale Price USD 5.48

  • Microbe-Lift Gravel & Substrate Cleaner - 4 fl oz
    • Made to clean up organic wastes, like muck & sludge
    • This method will prevent bad toxins from developing
    • Clarifies your aquarium water after 48-96 hours of use
    • Uses cellulosic matter & select biological accelerators

    Regular Price: USD 4.49

    Sale Price USD 3.83

    Regular Price: USD 4.49

    Sale Price USD 3.83

  • Microbe-Lift Gravel & Substrate Cleaner - 16 fl oz
    • Made to clean up organic wastes, like muck & sludge
    • This method will prevent bad toxins from developing
    • Clarifies your aquarium water after 48-96 hours of use
    • Uses cellulosic matter & select biological accelerators

    Regular Price: USD 9.49

    Sale Price USD 8.23

    Regular Price: USD 9.49

    Sale Price USD 8.23

  • Microbe-Lift Gel Filter Cartridge Inoculant - 8 fl oz
    • Strongly attaches to any type of filter media
    • Allows biological bacteria to promptly form
    • Restores your ponds healthy bacterial state
    • Helps denitrification to lower nitrate levels
    • Suitable to use in freshwater or saltwater

    Regular Price: USD 5.99

    Sale Price USD 5.48

    Regular Price: USD 5.99

    Sale Price USD 5.48

  • Microbe-Lift Gel Filter Cartridge Inoculant - 4 fl oz
    • Strongly attaches to any type of filter media
    • Allows biological bacteria to promptly form
    • Restores your ponds healthy bacterial state
    • Helps denitrification to lower nitrate levels
    • Suitable to use in freshwater or saltwater

    Regular Price: USD 4.49

    Sale Price USD 3.83

    Regular Price: USD 4.49

    Sale Price USD 3.83

  • Freshwater Phosphate Remover - 4 oz
    • Clears up cloudy water while rapidly removing phosphate
    • Elimination rate is between 1.0 to 1.5 ppm of phosphate
    • Strictly suitable to use for ornamental and aquarium fish
    • Dose accordingly for pH and alkalinity to remain the same

    Regular Price: USD 3.99

    Sale Price USD 3.28

    Regular Price: USD 3.99

    Sale Price USD 3.28

  • Microbe-Lift Freshwater Artemiss - 8 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 8.49

    Sale Price USD 7.68

    Regular Price: USD 8.49

    Sale Price USD 7.68

  • Microbe-Lift Freshwater Artemiss - 4 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 4.99

    Sale Price USD 4.38

    Regular Price: USD 4.99

    Sale Price USD 4.38

  • Microbe-Lift Freshwater Artemiss - 16 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 12.99

    Sale Price USD 10.98

    Regular Price: USD 12.99

    Sale Price USD 10.98

  • Exotic Betta Care - 2 oz
    • Neutralizes chlorine, chloramines, heavy metals & removes ammonia
    • Vitamins, minerals electrolytes, slime coat conditioners & emollients
    • Supports all bettas special necessities for optimal aquarium fish water

    Regular Price: USD 2.99

    Sale Price USD 2.18

    Regular Price: USD 2.99

    Sale Price USD 2.18

  • Microbe-Lift Dechlorinator + Water Conditioner - 8 fl oz
    • Eliminates chlorine, chloramines & detoxifies heavy metals
    • Adds a multi-part skin-slime replacer & crucial electrolytes
    • Boosts alkalinity and is non-toxic to humans, pets and fish
    • This method is able to treat up to 480 gal of aquarium water
    • This is not intended to use for fish of human consumption

    Regular Price: USD 4.49

    Sale Price USD 3.83

    Regular Price: USD 4.49

    Sale Price USD 3.83

  • Microbe-Lift Dechlorinator + Water Conditioner - 4 fl oz
    • Eliminates chlorine, chloramines & detoxifies heavy metals
    • Adds a multi-part skin-slime replacer & crucial electrolytes
    • Boosts alkalinity and is non-toxic to humans, pets and fish
    • This method is able to treat up to 240 gal of aquarium water
    • This is not intended to use for fish of human consumption

    Regular Price: USD 2.99

    Sale Price USD 2.18

    Regular Price: USD 2.99

    Sale Price USD 2.18

  • Microbe-Lift Dechlorinator + Water Conditioner - 16 fl oz
    • Eliminates chlorine, chloramines & detoxifies heavy metals
    • Adds a multi-part skin-slime replacer & crucial electrolytes
    • Boosts alkalinity and is non-toxic to humans, pets and fish
    • This method is able to treat up to 960 gal of aquarium water
    • This is not intended to use for fish of human consumption

    Regular Price: USD 6.99

    Sale Price USD 5.48

    Regular Price: USD 6.99

    Sale Price USD 5.48

  • Microbe-Lift Bacterial Aquarium Balancer - 8 fl oz
    • Uses odor-free, natural and non-pathogenic bacteria
    • Reduces organic waste on ornaments, gravel & filters
    • Eliminates ammonia along with nitrate from the water
    • This Aquarium Balancer prevents "new tank syndrome"
    • Treats up to 950 gal for fresh or saltwater aquariums

    Regular Price: USD 3.99

    Sale Price USD 3.28

    Regular Price: USD 3.99

    Sale Price USD 3.28

  • Microbe-Lift Bacterial Aquarium Balancer - 4 fl oz
    • Uses odor-free, natural and non-pathogenic bacteria
    • Reduces organic waste on ornaments, gravel & filters
    • Eliminates ammonia along with nitrate from the water
    • This Aquarium Balancer prevents "new tank syndrome"
    • Treats up to 475 gal for fresh or saltwater aquariums

    Regular Price: USD 2.49

    Sale Price USD 2.18

    Regular Price: USD 2.49

    Sale Price USD 2.18

  • Microbe-Lift Reef & Marine Artemiss - 8 fl oz
    • Decreases bacterial & fungal infections as well as diseases
    • Formula will heal all damaged tissues until fully recovered
    • Artemiss treats bacterial dropsy, bulging eyes and fungus
    • Treats ulcers, milky skin, mouth/fin/tail rot & raised scales
    • Not intended to use with other medications or treatments

    Regular Price: USD 8.99

    Sale Price USD 7.13

    Regular Price: USD 8.99

    Sale Price USD 7.13

  • Microbe-Lift Special Blend - 1 gal
    • Helps to break down decaying organic matter and cycle elements
    • Reduces maintenance & lowers ammonia and nitrates from water
    • Breaks down protein foam and residue on gravel, plants and rocks
    • Odors will be eliminated and water clarification will be activated
    • Plant growth is naturally stimulated and presents better absorption

    Regular Price: USD 42.99

    Sale Price USD 40.68

    Regular Price: USD 42.99

    Sale Price USD 40.68

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