For fish oxygen demands for emrgency with pure DO. We selected this to sell. We sell a bunch of these for transportation of fish. It is kinda like George system but ready to go. I suggest you purchase form local weldign shop your oxygen cylinder. http://lakework.com/cart/index.php?p=product&id=181&parent=16
The price on that is better than I anticipated when I looked it up, Greg. I may see how successful my current heaters are first. 1800W will add up a little on monthly energy bills, I'd think. Does anybody know how to calculate the monthly cost of running an 1800W heater?
Holding a redear sunfish is like running with scissors.