 Adding sand?
I have 100 lbs to add to the exsisitng tank. How much can I add without starting a cycle? I have 100 lbs in there now and it barels covers the bottom. I can see through the bottom and want to cover it and eventually get to a dsb. Any thoughts? Its fiji pink I dont think it matters. _________ 2 year old 220 reef tank, 40 gallon sump with fuge, PM bullet 2 skimmer, 350 lbs of LR, also 150fowlr and red sea max.  | 
