Hey all I've got a question about adding another false percula. I had bought two about 3 weeks ago,they got along great. The other day i noticed my skimmer wasnt working i took it apart and found my larger perc in there. Heartbroken, i want to buy another one. Problem is i heard that when adding a perc to a tank with a perc in there already you should buy small is this correct? If so my remaining perc is very small as is and i may not be able to find a smaller one should i go add a bigger one? or will they constantly fight?