Additives

Items 1 to 48 of 314 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.
  • 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
    CAD 9.99
    CAD 9.99
  • Ammonia Remover - 8 oz
    • 8 fl oz's will treat up to 480 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
    CAD 13.99
    CAD 13.99
  • API Accu-Clear - 1.25 fl oz
    Clarifies hazy aquarium water fast, eliminating clouding brought about by suspended particles. Clumps tiny floating particles together, forming large particles to be removed by the aquarium filter. Eliminates milky haze caused by gravel in new aquariums.
    CAD 4.49
    CAD 4.49
  • API Accu-Clear - 4 fl oz
    Clarifies hazy aquarium water fast, eliminating clouding brought about by suspended particles. Clumps tiny floating particles together, forming large particles to be removed by the aquarium filter. Eliminates milky haze caused by gravel in new aquariums.
    CAD 7.99
    CAD 7.99
  • API Accu-Clear - 8 fl oz
    Clarifies hazy aquarium water fast, eliminating clouding brought about by suspended particles. Clumps tiny floating particles together, forming large particles to be removed by the aquarium filter. Eliminates milky haze caused by gravel in new aquariums.
    CAD 11.99
    CAD 11.99
  • API Ammo Lock - 16 fl oz
    Works instantly, in both fresh and saltwater, to detoxify ammonia and remove chlorine and chloramines. Locks up ammonia in a non-toxic form until it can be broken down by the tank's natural biological filter.
    CAD 18.99
    CAD 18.99
  • API Ammo Lock - 4 fl oz
    Works instantly, in both fresh and saltwater, to detoxify ammonia and remove chlorine and chloramines. Locks up ammonia in a non-toxic form until it can be broken down by the tank's natural biological filter.
    CAD 6.99
    CAD 6.99
  • API Ammo Lock - 8 fl oz
    Works instantly, in both fresh and saltwater, to detoxify ammonia and remove chlorine and chloramines. Locks up ammonia in a non-toxic form until it can be broken down by the tank's natural biological filter.
    CAD 11.99
    CAD 11.99
  • API Betta Complete Water Conditioner - 1.25 fl oz
    Instantly makes tap water safe for Bettas. Contains Aloe Vera to help stimulate their natural protective slime coating, and repair fins and tissue damaged from handling and disease. Detoxifies chlorine, chloramine, ammonia and heavy metals.
    CAD 4.99
    CAD 4.99
  • API Goldfish Aquarium Cleaner - 4 fl oz
    Helps keep gravel clean and removes organic sludge, works naturally to break down solid fish waste, and helps reduce toxic ammonia and nitrite by boosting the effectiveness of the biological filter in established aquariums.
    CAD 5.99
    CAD 5.99
  • API Goldfish Protect - 4 fl oz
    API Goldfish Protect makes tap water safe for goldfish. It removes chlorine and chloramines, detoxifies ammonia released by goldfish, enhances the protective slime coat of fish, and contains trace minerals for fish health.
    CAD 5.99
    CAD 5.99
  • API pH Down - 16 fl oz
    Lowers pH and makes aquariums more acidic. Fast-acting, colourless and easy-to-use.
    CAD 23.99
    CAD 23.99
  • API pH Down - 4 fl oz
    Lowers pH and makes aquariums more acidic. Fast-acting, colourless and easy-to-use.
    CAD 6.99
    CAD 6.99
  • API pH Up - 16 fl oz
    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.
    CAD 23.99
    CAD 23.99
  • API pH Up - 4 fl oz
    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.
    CAD 6.99
    CAD 6.99
  • API Proper pH 6.5 - 240 g
    Proper pH 6.5 neutralizes chlorine, detoxifies heavy metals, and adds electrolytes to the aquarium. Contains Aloe Vera, a proven natural stress reducer and healing agent. Proper pH 6.5 will lower or raise the pH until 6.5 is reached. pH will not rebound.
    CAD 14.99
    CAD 14.99
  • API Proper pH 7.0 - 250 g
    Proper pH 7.0 neutralizes chlorine, detoxifies heavy metals, and adds electrolytes to the aquarium. Contains Aloe Vera, a proven natural stress reducer and healing agent. Will lower or raise the pH until 7.0 is reached. pH will not rebound.
    CAD 14.99
    CAD 14.99
  • API Proper pH 7.5 - 260 g
    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.
    CAD 14.99
    CAD 14.99
  • API Proper pH 8.2 - 160 g
    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.
    CAD 14.99
    CAD 14.99
  • API Sludge Destroyer Cichlid - 8 fl oz
    Contains more than 3 billion bacteria spores per dose to digest sludge and dissolved organics for a cleaner and healthier aquarium. Sludge Destroyer Cichlid is great for heavily stocked aquariums and reduces aquarium maintenance.
    CAD 15.99
    CAD 15.99
  • API Stress Coat+ - 16 fl oz
    • Patented formula contains aloe vera - nature's liquid bandage
    • Forms a synthetic slime coating on the skin of fish
    • Replaces natural slime lost by handling, shipping, stress, etc.
    • Removes ammonia, chlorine, and chloramines instantly
    • Also neutralizes heavy metals
    CAD 16.99
    CAD 16.99
  • API Stress Coat+ - 1 gal
    • Patented formula contains aloe vera - nature's liquid bandage
    • Forms a synthetic slime coating on the skin of fish
    • Replaces natural slime lost by handling, shipping, stress, etc.
    • Removes ammonia, chlorine, and chloramines instantly
    • Also neutralizes heavy metals
    CAD 69.99
    CAD 69.99
  • API Stress Coat+ - 4 fl oz
    • Patented formula contains aloe vera - nature's liquid bandage
    • Forms a synthetic slime coating on the skin of fish
    • Replaces natural slime lost by handling, shipping, stress, etc.
    • Removes ammonia, chlorine, and chloramines instantly
    • Also neutralizes heavy metals
    CAD 6.99
    CAD 6.99
  • API Stress Coat+ - 64 fl oz
    • Patented formula contains aloe vera - nature's liquid bandage
    • Forms a synthetic slime coating on the skin of fish
    • Replaces natural slime lost by handling, shipping, stress, etc.
    • Removes ammonia, chlorine, and chloramines instantly
    • Also neutralizes heavy metals
    CAD 44.99
    CAD 44.99
  • API Stress Coat+ - 8 fl oz
    • Patented formula contains aloe vera - nature's liquid bandage
    • Forms a synthetic slime coating on the skin of fish
    • Replaces natural slime lost by handling, shipping, stress, etc.
    • Removes ammonia, chlorine, and chloramines instantly
    • Also neutralizes heavy metals
    CAD 10.99
    CAD 10.99
  • API Stress Coat Marine - 16 fl oz
    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.
    CAD 16.99
    CAD 16.99
  • API Stress Zyme+ - 16 fl oz
    Improves the development of the biological filter and helps clean a dirty aquarium. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Safe for fresh and saltwater aquariums.
    CAD 24.99
    CAD 24.99
  • API Stress Zyme+ - 1 gal
    Improves the development of the biological filter and helps clean a dirty aquarium. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Safe for fresh and saltwater aquariums.
    CAD 89.99
    CAD 89.99
  • API Stress Zyme+ - 4 fl oz
    Improves the development of the biological filter and helps clean a dirty aquarium. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Safe for fresh and saltwater aquariums.
    CAD 7.99
    CAD 7.99
  • API Stress Zyme+ - 64 fl oz
    Improves the development of the biological filter and helps clean a dirty aquarium. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Safe for fresh and saltwater aquariums.
    CAD 59.99
    CAD 59.99
  • API Stress Zyme+ - 8 fl oz
    Improves the development of the biological filter and helps clean a dirty aquarium. Breaks down organic compounds that cause dangerous conditions such as ammonia and nitrite poisoning and low oxygen levels. Safe for fresh and saltwater aquariums.
    CAD 14.99
    CAD 14.99
  • API Tap Water Conditioner - 16 fl oz
    • Super-strength water conditioner
    • Instantly removes chlorine and detoxifies heavy metals
    • Each gallon of tap water only requires a single drop!
    • Safe for all aquatic life
    • Use when setting up a new aquarium or when adding water
    CAD 14.99
    CAD 14.99
  • API Tap Water Conditioner - 1 gal
    • Super-strength water conditioner
    • Instantly removes chlorine and detoxifies heavy metals
    • Each gallon of tap water only requires a single drop!
    • Safe for all aquatic life
    • Use when setting up a new aquarium or when adding water
    CAD 59.99
    CAD 59.99
  • API Tap Water Conditioner - 4 fl oz
    • Super-strength water conditioner
    • Instantly removes chlorine and detoxifies heavy metals
    • Each gallon of tap water only requires a single drop!
    • Safe for all aquatic life
    • Use when setting up a new aquarium or when adding water
    CAD 5.99
    CAD 5.99
  • API Tap Water Conditioner - 8 fl oz
    • Super-strength water conditioner
    • Instantly removes chlorine and detoxifies heavy metals
    • Each gallon of tap water only requires a single drop!
    • Safe for all aquatic life
    • Use when setting up a new aquarium or when adding water
    CAD 9.99
    CAD 9.99
  • 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
    CAD 11.99
    CAD 11.99
  • 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
    CAD 7.99
    CAD 7.99
  • Aquarium Conditioner - 8 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
    CAD 11.99
    CAD 11.99
  • Aquarium Nite-Out II - 16 fl oz
    • 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
    CAD 22.99
    CAD 22.99
  • Aquarium Nite-Out II - 4 fl oz
    • 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
    CAD 9.99
    CAD 9.99
  • Aquarium Nite-Out II - 64 fl oz
    • 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
    CAD 74.99
    CAD 74.99
  • ATM Colony Freshwater Professional Grade Nitrifying Bacteria - 16 fl oz
    • 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.
    CAD 18.99
    CAD 18.99
  • ATM Colony Freshwater Professional Grade Nitrifying Bacteria - 32 fl oz
    • 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.
    CAD 25.99
    CAD 25.99
  • ATM Colony Freshwater Professional Grade Nitrifying Bacteria - 4 fl oz
    • 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.
    CAD 8.99
    CAD 8.99
  • ATM Colony Freshwater Professional Grade Nitrifying Bacteria - 8 fl oz
    • 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.
    CAD 11.99
    CAD 11.99
  • ATM Colony Marine Professional Grade Nitrifying Bacteria - 16 fl oz
    • 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.
    CAD 21.99
    CAD 21.99
  • ATM Colony Marine Professional Grade Nitrifying Bacteria - 32 fl oz
    • 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.
    CAD 32.99
    CAD 32.99
  • ATM Colony Marine Professional Grade Nitrifying Bacteria - 4 fl oz
    • 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.
    CAD 10.99
    CAD 10.99
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