Got the insert in for the half sand bed half barebottom concept and I think its gonna work hit a snag was going to drill the tank today but the overflow kit i had gotten didnt come with the template. Now i know what everyone is thinking just drill plywood and use that. With that being said i wish i could the bit itself is 2 3/8 for the kit i would need a 2 7/16 hole saw bit to cut the ply wood to eliminate bounce and skipping. If i am off by 1/16 it could cause the overflow to not sit flush due to the rim of the tank. I have to be perfect with this or I will have wasted a 55g tank. I have the hole drawn out on outside and inside for where it must be. Needless to say template ordered. Went with oceans direct sand and have the bag sitting in a good area temp. Wise till its ready to go in the tank. Slowly making the progresss I need.