Underground Filters

[krucialkey560]

K, i know this topic has been discussed before but i couldnt find the thread????SO are Underground Filter necesarry???DO they do any good/bad???HOlla,much love
krucialkey560

[Richer]

Rather than have everyone post their own opinions again...

http://www.aquariacentral.com/forums/showthread.php?threadid=1311

HTH
-Richer