ok thanks. I'm just wondering, if something like an ick outbreak occurs if im missing something on this pair or because they get stressed, I have available to me my friend's old 10g, but i don't think it has a heater. I don't know if I can acquire a heater, I'd need a cheaper one that works. or would it be ok to just plop them in the 10g and occasionally add more heated water? In a worst case scenario, I'd have to treat my whole tank (which I don't want to do) but that would hurt the cycle if I've learned correctly? Has anybody had any luck with treating ick without medications? It wouldn't harm anybody to raise the heater up a few degrees, and do water changes.