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EcoBio-Block Stone for Aquariums, Medium - Natural Water Clarifier and Odor Remover, Treats 15 to 40 Gallons
- Volcanic rock containing beneficial bacteria colonies, disperse about every 30 minutes. Clarifies cloudy water and eliminates odors
- Speeds up nitrogen cycle, with 100% pure bacteria in spores which germinate in early, middle and late stages, only germinating in the presence of organic waste.
- Reduces need for frequent maintenance by continually replenishing beneficial bacteria for 1 and a half to two years
- Safe for all fish, reptiles, amphibians and other aquatic life
- Simple to use, no mess aquarium care in fresh or salt water. M size treats tanks from 15 to 40 gallons.
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