Ive had a 55g with 2 oscars 8-10in, a lepriconis i think its called bout 8 inch yellow black stripes, parrot fish 3in round, chinesee algea eater and a spotted cat 3-4in. I have never used a heater before but have seen post on putting heaters in sumps and what not. But those are usually 100G plus tanks it seems. Should i be using one? The fish are fine have had them for a while no problems. I read in here about the bacteria growth and the heat being good.



