Hi guys. I recently noticed that my bichirs can't seem to be able to clear off the prawn I feed them and there's quite a large amount of leftover. Apparently, my pump isn't strong enough to suck up the MP and my dad clears them up by scooping them off with a net, scaring my bichirs on a daily basis, which could be a reason for their poor appetite. Can anyone here recommend any pump that's capable of sucking up the prawn or offer any solution to my problem. Thanks in advance.