Water Conditioners & Additives

API® STRESS COAT water conditioner makes tap water safe for fish by removing chlorine, chloramines and heavy metals from tap water, and contain...

API® pH DOWN pH adjuster lowers pH to make freshwater aquariums more acidic for fish and plants when levels rise too high. pH is the measure...

API® pH UP pH adjuster raises pH levels in your aquarium to make water more alkaline when levels fall too low. pH is the measure of acidic o...

API® STRESS ZYME bacterial cleaner contains over 300 million live bacteria per teaspoonful to consume sludge and reduce aquarium maintenance...

The first instant terrarium water conditioner. Great for reptile water bowls, chameleon drip water systems, amphibian enclosures, and aquatic turtl...

SureStart conditioner pack combines Prime, Stability, and Clarity into one convenient pack. It’s great for any aquarist but is ideal for the beginn...

Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and ammonia. Prime converts am...

Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and ammonia. Prime converts am...

Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and ammonia. Prime converts am...

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 an...

Acid Buffer is a non-phosphate buffer to lower pH and buffer with Alkaline Buffer. Both buffers are designed for the planted aquarium or for very h...

Clarity is the ultimate clarifier for both fresh and saltwater. It employs an advanced polymeric flocculating agent that is both reef and plant saf...

Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death...

Stability® will rapidly and safely establish the aquarium biofilter in freshwater and marine systems, thereby preventing the #1 cause of fish death...

API Turtle Sludge Destroyer cleans your aquarium or vivarium using beneficial bacteria, which breaks down organic waste and debris to reduce mainte...

API Pond AlgaeFix algae control effectively controls green water algae blooms, string or hair algae (Cladophora), and blanketweed (Oedogonium) in p...

API Pond AlgaeFix algae control effectively controls green water algae blooms, string or hair algae (Cladophora), and blanketweed (Oedogonium) in p...

API® Tap Water Conditioner treatment removes toxins from tap water instantly, so you can add fish to your aquarium (or add them back after a wat...

A complete, reef-safe, controllable solution for nitrate & phosphate reduction NO3:PO4-X is the original, safest, most popular, and best solu...

A complete, reef-safe, controllable solution for nitrate & phosphate reduction NO3:PO4-X is the original, safest, most popular, and best solu...

Fritz Complete is a concentrated, full-spectrum water conditioner that detoxifies chlorine, chloramine, heavy metals, ammonia, nitrite and nitrate....

Fritz Algae Clean Out targets string algae, blanketweed and green water caused by single-celled algae. Excessive algae growth is the most common co...

Cloudy, discolored water is caused by overfeeding, biological blooms, gravel dust and other suspended particles that are too fine to be removed by ...

Cloudy, discolored water is caused by overfeeding, biological blooms, gravel dust and other suspended particles that are too fine to be removed by ...