please help how can i improve my tank..its been running for almost 1 month... everytime i put nemo, its been acting like blind...bumping on the glass , corals..everywhere..but the other fishes are doing fine ..i have firefish but hes hiding somwhere..i have sk-300 skimmer , powerhead filter and wave maker.. my tank size is 20gallon.. 2 blue chromis , 1 nemo (i think he'll die soon
.. ) 1 firefish 1 yellowtail damsel 1 electric scallop..my 1 coral its tentacles are very fat and i saw a a small brown tube looks like its injected to it and there is a fur at the top of it.. i need your help everyone..
thankyou..