I know I posted my tank up forsale but I am having second thoughts now. I really like the tank. It truly is one of a kind and would not be easliy replaced. Does everyone think I am just being impatient? The tank is just about a year old. I am still not sure what the issue is but the tank looks good now. No more diatoms on the sand. No cyano. Everything but the corals seem happy. Not sure what to do... I am pretty sure I may need to change the lighting again.. I dont think I am getting enough spread on the DIF100 to cover the entire tank that well...