Tracy
I used 3" foam that you would buy for pillows and such, cut it a little larger than the filter tank. I had power outside filters that would move a lot of water per hour in the 200 gal tank.they worked great on cichlids cause they do better when crowded

All cichlids like to dig in gravel for spawning

Last edited by Pat Williamson; 12/31/15 09:45 AM.