I had a small 30 gallon that was set up with a live rock filtration instead of the standard wet / dry and it worked great! The bio was great...everything in the tank flourished and it was relatively easy to up keep. But I wanted to upgrade and get bigger fish and more of them so I got a 80 G. It had a wet / dry system set up. I set up the 80 G but it hasnt been thriving as well as the live rock fitration set up. Sooooooo My question is from your experience what do you guys think is best?????? I am a beginner so any info will hep...THANKS!! :lolspin: