I bought my 24 g nano cube the other day and now have some brown/orange algea on my sand. how long do i need to wait until i put snails in. I have 25 lbs of live rock in there that was full of critters and have some algea on them. not sure what the critters are or what they were as alot of them have died. i do still have alot of things living in the rock and the sand. every morning i wake up and there is a new spider web looking thing on a different rock. should i leave my lights on during the day or just stick with the moon light?