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Aquarium Supplies

Fish Additives & Supplements

We carry a wide variety of additives produced by the most respected companies serving the aquarium hobby, such as Kent Marine, E.S.V., Seachem and Two Little Fishies. 2-part Calcium and Alkalinity Supplements are popular additives among reef keepers since calcium and alkalinity tend to deplete quickly in a reef aquarium.
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476 - 297 of 297
Aquarium Pharmaceuticals® API Proper pH 8.2

Aquarium Pharmaceuticals® API Proper pH 8.2

Easy-to-use, fast dissolving powder that automatically sets and stabilizes pH at 8.2 while neutralizing chlorine and detoxifying heavy metals. For saltwater, brackish and African cichlid aquariums. Contains aloe vera and electroly...

$12.99
Salifert Boron 500 mL

Salifert Boron 500 mL

Why is boron required? Boron is present in NSW (Natural Sea Water) in a moderately low concentration (4.4 - 4.8 mg/L or ppm). It is present predominantly as boric acid and to a lesser extent as borate. It has several important...

$20.99
Brightwell Aquatics Neo-Mag Magnesium Media For Reef Aquaria 5.4kg / 11.9 lbs

Brightwell Aquatics Neo-Mag Magnesium Media For Reef Aquaria 5.4kg / 11.9 lbs

• High-purity, magnesium-rich mineral that may be employed in traditional calcium reactors, or even blended in to pre-existing aquarium substratum, to gradually increase and maintain the magnesium concentrat...

$36.69
Continuum Aquatics Reef-Basis Reactor Liquid Aragonite Supplement - 250 ml

Continuum Aquatics Reef-Basis Reactor Liquid Aragonite Supplement - 250 ml

Reef•Basis Reactor Description: Fortified Liquid Aragonite for Marine Aquariums Features: • One step calcium buffer system • Contains suspended aragonite • Promotes Coraline Algae Growth Advantages: Reef•Basis...

$9.49
Caribsea ReefCal Ionic Calcium Solution 16oz

Caribsea ReefCal Ionic Calcium Solution 16oz

Caribsea ReefCal ReefCal is a 100,000 ppm ionic calcium solution. ReefCal will raise calcium levels by just over 5 ppm per capful (5 ml) per 25 gallons of water. Use a good quality test kit to moniter dissolved calcium levels i...

$15.68 $14.11
Prodibio STRONTI+ PRO - 10 Vials

Prodibio STRONTI+ PRO - 10 Vials

Hard corals need Strontium as well as calcium to form their skeleton. In the ocean, currents provide all the necessary elements. In the closed environment of the aquarium, Strontium demand is constant so its input is necessary. ...

$119.99
Prodibio STOP AMMO PRO - 10 vials of 10ml each

Prodibio STOP AMMO PRO - 10 vials of 10ml each

Ammonium is very toxic in an aquarium, especially when the pH level exceeds 7.5. It is the cause of nitrite surges and the cause of stress, immunity deficiency and damage to the gills. STOP AMMO made from natural plant extracts, ...

$119.99
Caribsea Bio Magnet Clarifier 8oz

Caribsea Bio Magnet Clarifier 8oz

Cloudy aquarium water is caused by fine suspended particles such as algae, silt, and bacteria. These particles usually carry a negative charge as does most filter media. The filter media, therefore, repels these particles, and wat...

$12.99
Kordon Amquel 16 oz.

Kordon Amquel 16 oz.

Removes ammonia, chloramines, chlorine, and many other organic toxins. Completely non-toxic, contains no formaldehyde, and will not effect dissolved oxygen levels. Novaqua can be used with it to fully condition water. One teaspoon...

$13.99
Korallin PO4 Minus

Korallin PO4 Minus

Are you tired of constantly replacing the water in your aquarium because it seems to be getting dirty too often? Do you want to be assured with a way to keep the liquid clean and healthy without spending money on electricity and g...

$25.49 $15.99
Caribsea Phos-Buster Pro 8oz

Caribsea Phos-Buster Pro 8oz

Phos-Buster™ Pro Phos-Buster™ Pro’s unique patent pending formula removes dissolved phosphates in minutes instead of days. Safe for all reef tanks, saltwater, and freshwater aquariums of all sorts. Each 8 oz. bottle removes at ...

$23.49
Prodibio IODI+ PRO - 10 Vials

Prodibio IODI+ PRO - 10 Vials

IODINE is a very important trace element. It is rapidly eliminated by invertebrates, protein skimmer, active carbon, algae or is dispersed into the atmosphere. IODI + gives your aquarium the iodine it needs for the development an...

$110.00
Salifert Boron 250 mL

Salifert Boron 250 mL

Why is boron required? Boron is present in NSW (Natural Sea Water) in a moderately low concentration (4.4 - 4.8 mg/L or ppm). It is present predominantly as boric acid and to a lesser extent as borate. It has several important...

$14.99
Boyd Enterprises Marine Vita-Chem 16oz

Boyd Enterprises Marine Vita-Chem 16oz

Do you think that the fish living in your saltwater aquarium needs more nutrients in their food? You should know that animals in freshwater aquariums do not have the same diet and nutritional requirements as their saltwater counte...

$29.61
Aqua Vision Aquatics Precision Kalkwasser - 225g

Aqua Vision Aquatics Precision Kalkwasser - 225g

Precision Kalkwasser is a tried and true method for supplementing calcium and maintaining KH/alkalinity levels in marine aquariums. Experts have used Kalkwasser for many years, and few products compare to its effectiveness. Its pr...

$9.99 $8.99
Jungle Labs Ammonia Chlorine Eliminator 2oz Liquid

Jungle Labs Ammonia Chlorine Eliminator 2oz Liquid

Ammonia Chloramine Eliminator (Liquid),"• For Freshwater, Saltwater, Goldfish • Removes Ammonia, Chloramine & Chlorine","Neutralizes the harmful effects of ammonia, chloramine and chlorine. Safe and ...

$9.99
Seachem Laboratories Clarity - 250mL

Seachem Laboratories Clarity - 250mL

Seachem Clarity is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is both reef and plant safe. Clarity is the only clarifier on the market that does it all! Clarity wi...

$7.49
Tetra Instant Ocean Biospira Saltwater 100 mL

Tetra Instant Ocean Biospira Saltwater 100 mL

Patented nitrifying bacteria make marine aquariums fish-safe instantly. Instantly make your marine aquarium fish-safe with BIO-Spira. Natural bacteria additive accelerates the establishment of the bio-filter by providing a patente...

$13.99
Kordon Novaqua Plus 5 Gallon

Kordon Novaqua Plus 5 Gallon

Provides a Protective Skin Slime Contains Organic Immune Health Aids Adds Electrolytes and Vitamins Provides an Organic Virus Inhibitor Removes Chlorine & Toxic Metals Breaks Down Chloramines A single dose of NovAqua Plus will hel...

$118.99
Aquarium Pharmaceuticals® API Stress Coat 4 Oz

Aquarium Pharmaceuticals® API Stress Coat 4 Oz

Acts as a liquid bandage to prevent the loss of essential electroytes; protects damaged tissue against disease-causing organisms. Helps heal torn fins & skin wounds. Use when setting up aquarium or changing water. Contains aloe ve...

$9.99
Biosafe Systems Greenclean Tabs 3 Lb

Biosafe Systems Greenclean Tabs 3 Lb

Same formulation as Green Clean Granular Algaecide but compressed into tablets for easy application use. No measuring required. Slow release maintenance application. Non-harmful to fish, aquatic plants and pets. Use 1 tablet per 2...

$34.82
Biosafe Systems Greenclean Blue Colorant 16 Oz

Biosafe Systems Greenclean Blue Colorant 16 Oz

Prevents the UV rays from the sun from penetrating through water, thereby preventing photosynthesis of all types of excessive plant growth. 16 oz

$20.76
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