Your sand will settle. If you want, point your powerheads towards the surface of the water and that will help. The bulkreefsupply ro
systems are great, I have one. Currently, with all the bad weather my spring water has had awful stuff in it so I don't run the unit or it'll get clogged (spring is under a corn field) and have great success from walmart and giant eagle distilled water.
Keep your chin up, the early months of a tank can be frustrating. I've wanted to kick the glass in my tank many times, but now things are going well...I'm just nit picking at this point.