Today my tropheus are a lot less active than usual and I have at least one individual with bulging eyes - see photo. The tank has an automatic water change system, and the filter is running great. Water parameters are ammonia 0, nitrite 0, nitrate, close to 0, pH 7.6, GH 9. They have been that for months. I added some multies recently, which are looking fine, but maybe they introduced something that's a problem for the tropheus. Darn, shouldn't have done that
Have added Clout as soon as I noticed there was a problem. Any other advice?
PS: I just found a dead one in the plants - see photos below. Another one is on the way out - floating upside down. I took both out. What a nightmare!Dead Tropheus