Koralia 2

[Ryan]

I bought a couple K2's 2nd hand. I put them in the aquarium to get a little more flow and first they wouldnt turn on when I plugged them in. So I pulled one apart and put it back together and bingo that worked. But I dont think its putting out the 600GPH its supposed to. Infact its putting out way less than my Maxi-jets thats rated for 270GPH. Is there something I need to know about these to get them to run at full force?