New 90gal reef setup

[spikehs]

going with about 1-2 inches of the fine sand (ooltic sp?)

[smellsfishy]

just a thought for ya. when i had a 75g running i had a 50 gallon sump which significatly reduced the microbubble returned to the tank, although i didn't want any powerheads in the tank so my turnover was about 3500gph. number of bafolds was also key. it also helped smoothout any spikes in the water quality