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Fish Tank Supplies > Fish Tank Water Treatments > Conditioners & Additives

Aquarium Water Conditioners and Additives


Aquarium water conditioners and additives like chlorine removers and stress relievers make tap water safe for use in aquariums, and should be used when preparing for tank setup or water changes. Cycle aids help you quickly establish the nitrogen cycle and avoid fatal "new tank syndrome". Ammonia removers save your tank from ammonia emergencies. To recreate natural water conditions for your aquarium, you may also need vitamins, supplements or aquarium salt.

The products below cater to every need, from freshwater fish to reefs to black water tanks. Some additives have multiple uses (aquarium water conditioners may remove chlorine, stress relievers may condition water, etc), so browse to see what products are right for your aquarium!

Shop by Type

Chlorine Removers





Water Conditioners





Stress Relief





Cycle Aids





Ammonia Removers





pH Regulation





Vitamins & Supplements





Aquarium Salt




Shop by Featured Products

Stability 250mL/8.5 fl oz (Seachem)
Regular Price: $6.99




NovAqua Plus Water Conditioner 16 oz. (Novalek)
Regular Price: $9.99




Prime 50mL (1.7oz)
Regular Price: $2.99




Betta Complete Water Conditioner - 1.25 oz.
Regular Price: $2.99




Professional Ammonia Detox - 16 oz.
Regular Price: $8.99




Stress Guard 17 oz 500mL
Regular Price: $9.99




Ultimate 16 oz. (Hikari)
Regular Price: $8.99




Complete Care Freshwater 14.5oz
Regular Price: $9.99




Aqua Plus Fin Care 16oz
Regular Price: $10.99




Bowl Buddies Betta Care Kit
Regular Price: $1.99




Bowl Buddies Goldfish Care Kit
Regular Price: $1.99




Spawn Aid 5oz Tropical
Regular Price: $7.99



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