Who Gives A Fish Forums

The sand substrate is fine, but make sure it's not too deep. Anaerobic pockets can form and release toxins. Stir it gently during water changes. How often do you vacuum the substrate?

My guppy has been losing color over the past few days, and now it's almost transparent. Water params are good, 0 ammonia, 0 nitrite, 10 nitrate. Tank is a 10 gallon with a sponge filter, kept at 78F. It's planted with Java fern and Anubias. What could be causing this?


I've seen this before with ...