So I'm getting into the reef keeping after a five year hiatus. Right now i've built the stand and just finished the custom hood. Inside I've got two 400w MH plus two 48" T8 floresent light strips. My tank has overflow inside which will run down under to a sump/refuge. My questions are 1) what bulbs should be actinic? Both strips or just one. 2) what size heater(s) do u recommend. 3) what about the sand bed. Can I use a combination of play sand and crushed coral. I'm planning on this tank to be a reef setup. I'm trying to custom retro everything and I'm kinda broke so any money saving advice would be appriciated to. 4) what size pump should I get to pump the water back up to the tank? Thanks y'all and I'll be glad to post pics. I also may have some extra ballasts and bulbs if anyone is interested. I'll be posting pics as things progress. Super excited right to get this under way