My 55 is 5 months old. For sand, use enough to get at least a 4 inch sandbed, I used around 120 lbs. As for LR
, I would use at least 1 lb per gallon. If you use a DSB
and enough LR
, you won't need a filter, maybe just a protein skimmer. I haven't got lights for mine yet, but I plan on getting a custom sea life power compact 4x65 watts. That comes out to 4.7 watts per gallon. I have 2 maxi-jet 1200's in each corner. The only other thing in my tank is the heater. No other filtration, until I have enough loot for a Protein skimmer. Good Luck!