Magdrives are the only pumps I've ever used and I've needed very few replacements.buddha1200;4580600; said:funny i have the same return pump(mag-drives are the best in my opinion)
Yeah,there is a good bit of the bio balls that are submerged but they should still get a good growth of bacteria.I'm not sure which of the two colonies are more effective though.sponger_2;4582371; said:shouldnt those bio balls be more out of the water?