Been trying to get a new tank up and running, having a few issues with this product. I rinsed the product quite a bit but still when disturbed a substantial amount of sand gets suspended into the water column clouding the water. Did I not rinse enough or is this to be expected for sand? Also when the T5 lights are on the sand looks more grey than black. Anyone else use this substrate? Do you have the same problems? Not real happy with the stuff so far.