Have a few questions I have aske two fish stores and got two different answers. I have a 75 gallon tank set up for 1 and a half months. Added two clown fish two weeks later added two blennies and a pink fish can't remember the name starts with an a. But when I added the blennies and the other fish the clowns seem maybe a little stressed they have been staying in one corner all the fish are getting along fine no ones picking on anyone but wanted to add an annenome to maybe help calm the clowns one petshop said I could get a cheaper annenome in case it dies and another said no don't add one for 3-6 months if I do add one it will crash the whole tank! So if I did add one would it crash the tank? Also when I set the tank up my friends tank has been up for over a year so we put there filter pads in our canister also added 15 gallons of their water to help it get good bacteria. Just curious on what I should do wanted to get a few more opinions thank you