Did you look into that dehumidifier yet? Does anyone know how much a decent dehumidifier would cost? I'm about to be building a decent sized pond probably around 600-800 gallons in the next few weeks and will be needing a dehumidifier I'm sure. Also could you please post pics of the DIY filter setup you have in detail for an idea. I think you should be turning over a little more water probably closer to 3000 gallons once you get that pond stocked up a little more. Thanks ~Trent