Right now i have a 55g w/ 3 3"+ reds. I'm wondering how to transport the gravel of that tank to my 120g. I have about 50lbs of black gravel in the 55 and i want to use it b/c i don't want to buy another 120 lbs of gravel and waste the 50 i already have. i have to let the 120 cycle for a month so what to do w/ the gravel in the 55?? Should i have like 70 75 lbs in the 120 until it is cycled then take the p's out put them in some buckets for awhile then empty the 55 and take the gravel out and put it in the 120 then add the p's??