The Puffer Forum

RO/DI water? pardon my ignorance. I'm actually using Nutrafin liquid test kit.
This tank has been running for 7-8 months. Thanks for all the help.

Sorry I got that wrong nitrite 0, nitrate 5, Ammonia always comes up a little cloudy yellow never clear. He is approx 2 inches.

He is alone in a 20g tank. He does have plenty of hiding places. I did recently changed the bulb to a Power-Glo, it's 18,000k. Water parameters are SG 1.016, nitrite 0, nitrate 0, Ammonia 0-0.6, pH 7.5-8.

I have a green spotted puffer whose colour has been concerning me. I've had him for approx one year and for the last 3 months his colour has been quite dark with a black belly only when the lights are on. When the lights go off he turns back to his bright green with a white belly. If I turn the ligh...