Hi All,\n \nHave a couple questions:\n \nFirst off, where I currently am in the cycle: 4 days ago I started my 28g nanocube by putting 25 lbs of LS, ~28 lbs of LR (not sure if it is cured), filling with water from the LFS, started the pumps, heater, took out the ceramic rings (but left the carbon and filter pad).\n \nNow to my questions:\n \n1) During the cycle, I assume I will need to topoff the tank to avoid high levels of evaporation. Is it okay to topoff during the cycle?\n \n2) Regarding the water I would use to topoff, I have a leftover bucket of water from the LFS when I filled the tank 4 days ago. This bucket (filled with water) is sitting in the cold garage (with no heater or pumps) with a large piece of LR I could not get to fit in the tank. Is it okay to use this water to topoff? There is nothing in the tank except LR and LS, do I still need to raise the temp of the water in the bucket, or is it okay to topoff using the cold water? \n \nThanks.