im still new at the game so please help me, im going to put down the tank that i got for a while do to me geting called by the national guard for deployment.........but want to know reset the tank when i come back..............want to know if wet/dry, bio balls are bad for reef or is it good for reef.......some people told me that's its bad while other said it's good, im going to be puting up a 125 or 180 gallon tank when i come back from my tour, and want to do it right the second time, im going to save my live rock and live sand in the 100gallon tank, but i will be needing a new skimmer(deltec is what i want) i got me a sump/refu. rigth now and 2 250 watt mh.....can any body help me answer the burnig ?... is wet/dry and bio balls good or bad for reef............