Help!
Ok, weve got some problems. My six-line wrasse and my smaller clown died a few weeks ago, so i got another six-line, along with a royal gramma basslet. When i brought the wrasse home, he was great. He was active, and he ate good. By basslet hid and whenever he came out, he was chased by the clown back into his spot. Next day i woke up, and the basslet was crab food, and the six-line had ich all over him. I panicked and did a water change after i discovered that nitrates were starting to barely read again (it was time for one anyway). Next morning he was dead. Why, why, why? Keep in mind a few things, the temp. is constant, all of my corals are perfect, my one clown is in perfect health, and i had been doing water tests a few times a week, and everything came out perfect. So if my water is perfect, and the temp. stays constant (about 78.4 in the morning, and 79.5 in the evening), why did almost all my fish die??
I have come up with a conclusion that im hoping will solve the problem. Judging by my one clown being quite a bully, my water being fine, i think maybe they died from stress. As you can see in my picture, i really dont have a lot of good hiding places, as that center cave is quite open. Maybe my clown harassed them enough to kill them? Does this sound logical? To solve this problem, i have reworked the rock in my tank, and added another 6lbs to create more places. Do you think this will solve my problem?