I have added on a drilled 10g frag tank to my current system that has been running for over 3 years. I was trying to do a bare bottom in the frag tank. I am having problems with algae on the bottom glass. I was thinking of adding a 1"-1.5" sand bed to the frag tank. It would serve two problems. 1. Will not have to look at algae and crud on bottom since it is sitting next to my display tank. 2. I could get rid of the ugly egg crate and just push the frag plugs into the sand bed since I only have a handful of frags usually. So my question is can I add all the sand at one time or should I do a few cups every few days/week?

