Now here's a thought for me. Was just crunching some numbers and it looks like the tank I am getting ready to construct is going to be right around 200gallons. Wowsers. Got me thinking since I don't have the luxary as most to have city water (instead I have well water), water changes might be a bit on the difficult side as far a quantity goes. So, with these larger tanks and lightly to moderately stocked....can one push out water changes a little less frequently? Ho boy..I think I heading toward troubled waters. Hope I don't have scrap the idea.