they tested my water for me and said everyhtign was fine.so i bought a maroon clown he was 18 bucks.hes awesome.him and my devil damsel are actually getting along wich is somehting i was worried about but i figured since they are both semi-aggresive it would be fine.neither of them is really doing anyhting to the other though.the clown is eating and everyhting and appears to be healthy.only thing is he doesent swim down into the tank..he stays up at the top...is this normal?will he swim down once he starts to get used to his new home?