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Additives

Items 1 to 48 of 458 total

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.
  • Microbe-Lift Ammonia Remover - 4 oz
    • 4 fl oz's will treat up to 240 gallons of your aquarium water
    • Removes chlorine, chloramines & high levels of ammonia
    • Does not alter aquarium alkalinity, pH or biological filtration
    • Only salicylate-based (indole-phenol) test should firmly be used
    • Do not use with permanganate or chlorite-based treatments

    Regular Price: USD 3.99

    Sale Price USD 2.99

    Regular Price: USD 3.99

    Sale Price USD 2.99

  • pH Regulator - 8 fl oz
    • Maintains the ideal long-term pH and alkalinity
    • Replenishes the beneficial vitamins & minerals
    • Supports health, activity, coloration and vitality
    • Phosphate & formaldehyde free pH Regulator
    • No acids or bases known to quickly change pH

    Regular Price: USD 5.49

    Sale Price USD 3.99

    Regular Price: USD 5.49

    Sale Price USD 3.99

    Out of stock

  • Marineland Aquarium Conditioner - 4 fl oz
    • Removes EPA maximum chlorine up to 4.5ppm & EPA maximum copper up to 1.3ppm
    • This conditioner has formaldehyde, synthetic PVP and ineffective aloe free ingredients
    • Super great for reducing inflammation and has a natural algae-based slime protector
    • Immune booster helps fight against virus, bacteria, fungi, parasites and heals wounds
    • Perfect for use during stressful transportation or cleaning and promotes overall health

    Regular Price: USD 3.49

    Sale Price USD 2.49

    Regular Price: USD 3.49

    Sale Price USD 2.49

  • Aquarium Clarifier - 8 fl oz
    • This Aquarium Clarifier quickly clears up cloudy water
    • Clumps particles from left-over food and other debris
    • This Clarifier is free of copper as well as formaldehyde
    • Has traces of iron to increase effectiveness and safety
    • Safe for fish, plants, invertebrates & soft water areas

    Regular Price: USD 5.49

    Sale Price USD 3.99

    Regular Price: USD 5.49

    Sale Price USD 3.99

  • Seachem StressGuard - 250 ml
    • Reduces handling or transportation stress
    • Promotes healing & is an antiseptic for fish
    • This is suitable for marine and freshwater
    • Does not coat resins or clog filter systems
    • Does not unbalance pH levels at any dose
    USD 7.86
    USD 7.86
  • Seachem StressGuard
    • Reduces handling or transportation stress
    • Promotes healing & is an antiseptic for fish
    • This is suitable for marine and freshwater
    • Does not coat resins or clog filter systems
    • Does not unbalance pH levels at any dose

    Price From: USD 7.86

    Price From: USD 7.86

  • Marineland Aquarium Conditioners
    • Removes EPA maximum chlorine up to 4.5ppm & EPA maximum copper up to 1.3ppm
    • This conditioner has formaldehyde, synthetic PVP and ineffective aloe free ingredients
    • Super great for reducing inflammation and has a natural algae-based slime protector
    • Immune booster helps fight against virus, bacteria, fungi, parasites and heals wounds
    • Perfect for use during stressful transportation or cleaning and promotes overall health

    Price From: USD 2.49

    Price From: USD 2.49

  • Microbe-Lift Ammonia Removers
    • 16 fl oz's will treat up to 960 gallons of your aquarium water
    • Removes chlorine, chloramines & high levels of ammonia
    • Does not alter aquarium alkalinity, pH or biological filtration
    • Only salicylate-based (indole-phenol) test should firmly be used
    • Do not use with permanganate or chlorite-based treatments

    Price From: USD 2.99

    Price From: USD 2.99

  • Microbe-Lift Artemiss
    • 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

    Price From: USD 3.99

    Price From: USD 3.99

  • Microbe-Lift Reef & Marine Artemiss
    • 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

    Price From: USD 3.99

    Price From: USD 3.99

  • Microbe-Lift Bacterial Aquarium Balancers
    • 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

    Price From: USD 1.99

    Price From: USD 1.99

  • Microbe-Lift Dechlorinator + Water Conditioners
    • 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

    Price From: USD 1.99

    Price From: USD 1.99

  • Microbe-Lift Gel Filter Cartridge Inoculants
    • 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

    Price From: USD 3.49

    Price From: USD 3.49

  • Microbe-Lift Gravel & Substrate Cleaner
    • 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

    Price From: USD 3.49

    Price From: USD 3.49

  • Microbe-Lift XTremes
    • Single-phase, buffered liquid water conditioner
    • Removes and detoxifies chlorine and ammonia
    • Nitrite copper and heavy metals are detoxified
    • Destroying chloramines & boosts the alkalinity
    • Adds electrolytes & multi-part skin-slime replacer

    Price From: USD 3.49

    Price From: USD 3.49

  • Seachem Cichlid Traces
    Cichlid Trace supplies a broad range of trace elements demonstrated to be necessary for proper fish health and growth. Restores trace elements depleted by utilization, oxidation and precipitation. Only contains elements required by fish.

    Price From: USD 9.49

    Price From: USD 9.49

  • Seachem Reef Strontiums
    Reef Strontium is intended to restore and maintain strontium to levels found in natural seawater without affecting pH. Aids the growth of corals, coralline algae and other organisms that lay down a calcereous skeleton or shell.

    Price From: USD 6.19

    Price From: USD 6.19

  • Seachem Reef Trace
    Reef Trace supplies a broad range of trace elements demonstrated to be necessary for proper reef health and growth. It helps maintain an environment ideal for the growth and reproduction of marine life.

    Price From: USD 9.80

    Price From: USD 9.80

  • Seachem Stability
    Stability will rapidly and safely establish biofiltration in freshwater and marine systems. Contains a synergistic blend of aerobic, anaerobic, and facultative bacteria which facilitate the breakdown of waste organics, ammonia, nitrite and nitrate.

    Price From: USD 2.84

    Price From: USD 2.84

  • Tropic Marin Bio-Calcium
    • Adds all 70 trace elements including strontium, molybdenum and iodine
    • Only natural substances are formed when dissolved- Add directly to your tank, no need to premix or drip.
    • Supplies calcium carbonate for corals and CO2 for the zooxanthellae.
    • Will not influence pH of aquarium if used as directed.
    • Measured amount of calcium in a truly ionically balanced formula

    Price From: USD 9.65

    Price From: USD 9.65

  • Tropic Marin Bio-Magnesium
    • Contains a combination of magnesium and minerals to promote essential biochemical processes in the aquarium.
    • Magnesium for accelerated skeleton growth of corals and calcareous coralline algae.
    • Maintains the natural ionic concentration and the pH value of the reef tank water!
    • No unnatural by-products. No phosphates or nitrates.
    • Measured amount of Magnesium in a truly ionically balanced formula.

    Price From: USD 13.53

    Price From: USD 13.53

  • Two Little Fishies C-Balance
    • Two-part calcium and alkalinity maintenance system
    • Adjusts calcium, magnesium, and strontium ions to seawater ratios
    • Keeps your calcium and alkalinity in perfect harmony
    • Ensures optimal conditions for growing stony corals and coralline algae

    Price From: USD 22.29

    Price From: USD 22.29

  • Two Little Fishies Kalkwasser
    • Pure source of Calcium Hydroxide
    • Replenishes calcium and maintains alkalinity
    • Benefits corals, clams, and calcareous algae
    • Helps maintain pH, precipitates phosphates, and enhances protein skimming

    Price From: USD 15.26

    Price From: USD 15.26

    Out of stock

  • 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 3.99

    Price From: USD 3.99

  • ATM Colony Marine 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 4.49

    Price From: USD 4.49

  • ATM Paradigm All Natural Vitamin C Water Conditioner
    • Vitamin C neutralizes chlorine and chloramine instantly
    • Boosts fishes' immune systems
    • Contains aloe vera and Vitamin E for natural healing
    • Replaces slime coat to reduce stress
    • Non-formaldehyde formula

    Price From: USD 3.99

    Price From: USD 3.99

  • SR Aquaristik Calcium Chloride (CaCl 2)
    • Laboratory tested and pharmaceutical-grade
    • Ideal for raising Calcium levels in reef aquariums
    • Dissolves easily and completely in purified water
    • Ammonia and phosphate free
    • Made in the U.S.A.

    Price From: USD 5.49

    Price From: USD 5.49

  • SR Aquaristik Alkalinity KH Booster (Sodium Bicarbonate)
    • Laboratory tested and pharmaceutical-grade
    • Ideal for raising alkalinity in reef aquariums
    • Dissolves easily and completely in purified water
    • Ammonia and phosphate free
    • Made in the U.S.A.

    Price From: USD 5.49

    Price From: USD 5.49

  • SR Aquaristik Alkalinity KH PH Booster (Sodium Carbonate/Soda Ash)
    • Laboratory tested and pharmaceutical-grade
    • Ideal for raising alkalinity and pH in reef aquariums
    • Dissolves easily and completely in purified water
    • Ammonia and phosphate free
    • Made in the U.S.A.

    Price From: USD 5.49

    Price From: USD 5.49

  • Seachem Reef Kalkwassers
    Seachem Reef Kalkwasser is a pure calcium hydroxide with unsurpassed purity and solubility characteristics. Calcium hydroxide is used to prepare limewater (kalkwasser) solutions that will maintain calcium concentrations at natural seawater levels.

    Price From: USD 13.11

    Price From: USD 13.11

  • Seachem Reef Iodides
    Seachem Reef Iodide is a concentrated (8,000 mg/L) stabilized potassium iodide source for reef aquaria that will restore and maintain iodide levels to those found in seawater. Provide a safe source of iodide that will not convert to toxic free iodine.

    Price From: USD 6.16

    Price From: USD 6.16

  • Seachem Reef Fusion 2
    Reef Fusion 2 contains a mixture of carbonates and bicarbonates at an alkalinity of 4400 meq/L. It is designed to restore and maintain alkalinity in the reef aquarium and provide calcareous species with the essential carbonate needed for growth.

    Price From: USD 7.50

    Price From: USD 7.50

  • Seachem Clarity
    The ultimate clarifier for both fresh and saltwater. Employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity will clear all types of clouding including, but not limited to, chemical clouding and particulate clouding.

    Price From: USD 3.65

    Price From: USD 3.65

  • Seachem Discus Buffers
    Seachem Discus Buffer helps to replicate the ideal Discus environment (low pH & low GH). Discus Buffer will lower pH and keep it lowered. It also softens water by precipitating calcium and magnesium. Adjusts pH to 5.8 - 6.8.

    Price From: USD 6.69

    Price From: USD 6.69

  • Seachem Discus Trace Liquid
    Discus Trace supplies a broad range of trace elements necessary for proper fish health and growth. It restores trace elements and minerals depleted by utilization, oxidation and precipitation. Does not contain sodium.

    Price From: USD 10.68

    Price From: USD 10.68

  • Seachem Equilibrium
    Equilibrium is specifically designed to establish the ideal mineral content for the planted aquarium. Equilibrium is ideally suited for use with RO (reverse osmosis) or DI (deionized) water or any mineral deficient water.

    Price From: USD 6.54

    Price From: USD 6.54

  • Seachem Fresh Trace
    A broad range of trace elements necessary for proper fish health and growth. Unlike terrestrial animals, fish obtain nutrients from both their food and environment. Restores trace elements depleted by utilization, oxidation and precipitation.

    Price From: USD 9.49

    Price From: USD 9.49

  • Seachem Malawi/Victoria Buffers
    Malawi / Victoria is a blend of carbonate salts designed to enhance the natural environment of cichlids by increasing hardness, buffer capacity, and pH. Formulated to maintain a pH of 7.8 - 8.4. Use when setting up new aquariums or doing water changes.

    Price From: USD 6.28

    Price From: USD 6.28

  • Seachem Marine Buffers
    • Safely raises and maintains the pH levels to 8.3
    • Not just sodium bicarbonate or sodium carbonate!
    • Dissolves readily and does not obscure water clarity

    Price From: USD 6.28

    Price From: USD 6.28

  • Seachem Neutral Regulators
    Seachem Neutral Regulator adjusts pH to neutral (pH 7.0) from either a low or high pH and maintains it there. It softens water by precipitating calcium and magnesium while removing chlorine, chloramine, and ammonia. Also stimulates slime coat production.

    Price From: USD 6.69

    Price From: USD 6.69

  • Seachem Prime
    • Removes unwanted chlorine, chloramine
    • Detoxifies heavy metals, ammonia, and nitrite
    • Stimulates a healthy, natural slime coat

    Price From: USD 2.96

    Price From: USD 2.96

  • Seachem Reef Advantage Calciums
    Seachem Reef Advantage Calcium is a non-caustic (pH 8.3 - 8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth.

    Price From: USD 7.55

    Price From: USD 7.55

  • Seachem Reef Advantage Magnesiums
    Reef Advantage Magnesium is a concentrated (80,000ppm) optimized blend of magnesium chloride and sulfate salts, designed to restore depleted levels of magnesium with minimal impact to the ionic ratios found in natural seawater.

    Price From: USD 8.65

    Price From: USD 8.65

  • Seachem Reef Buffers
    Seachem Reef Buffer will raise carbonate alkalinity; however, it is intended primarily for use as a buffer in a reef system where the maintenance of a pH of 8.3 is difficult. Designed to meet the needs and requirements on the closed reef environment.

    Price From: USD 6.28

    Price From: USD 6.28

  • Seachem Reef Builder
    Reef builder raises carbonate alkalinity without immediately impacting on ph. Carbonates and calcium are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health.

    Price From: USD 6.28

    Price From: USD 6.28

  • Seachem Reef Carbonate
    Reef Carbonate is a concentrated (4,000 meq/l) optimized blend of carbonate and bicarbonate salts designed to restore and maintain alkalinity in the reef aquarium. Calcium and carbonates are essential to all coral growth.

    Price From: USD 3.99

    Price From: USD 3.99

  • Seachem Reef Fusion 1
    Reef Fusion 1 provides not only 100,000 mg/L of ionic calcium, but also includes biologically appropriate levels of magnesium, strontium, boron, iron, manganese, and molybdenum.

    Price From: USD 7.50

    Price From: USD 7.50

  • SR Aquaristik Magnesium Supplement (Magnesium Chloride Hexahydrate)
    • Laboratory tested and pharmaceutical-grade
    • Ideal for raising magnesium in reef aquariums
    • Dissolves easily and completely in purified water
    • Ammonia and phosphate free
    • Made in the U.S.A.

    Price From: USD 6.49

    Price From: USD 6.49

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