I run Fluval FX5-6 on my larger tanks. I was curious how much flow/turnover I will need in the cube...the general 8x10 I use for cichlids? I was contemplating maybe a classic 2215 or maybe a new Eheim pro 3 2071 (might be too much?) What GPH should I be shooting for ~200? I know the classics have lower flow, but their filtering ability is awesome. I could always get another fluval. Any recommendations excluding Rena/API (not a big fan)...would be highly welcome. It is worth dropping money for quality imho. My friends have Eheim's decades old.