I have a 100 gallon stock tank in my garage with a paddle aerator. Works pretty good at keeping 30-75 bluegill alive for a few days. The problem is that every 2 or so days I have to change the water which means I got to unroll the hose pull it into the garage, hook it up to the bulge pump and wait for it to pump all out. Then I gotta take the hose out, turn it around, hook it up to the faucet, and fill the tank up. My hose is a cheap one and kinks up easy... its just annoying. Plus its tap water and I have to treat it to get the chlorine out and all that. I've experimented with a builge pump and awkwa lung system which works pretty good at filtering the water (still have to change it, just not as often) but the problem is that those builge pumps aren't designed for contiuous running and they burn up after about a week and need replaced. I think I've come up with a pretty cool solution though. A few days ago, I had a well drilled so that I could water my lawn without paying the ridiculous water bills. Since then, I think I figured out a way to automatically circulate in fresh well water (so I don't have to treat it). Here's the plan. I already had an existing sprinkler system that tapped into the main water line in the house. The pump on my new well pumps WAY more water then what was coming out of my water main, so I think I'm going to be able to wire my timer up so I can run two stations at the same time. I have a 6 station timer, so that means I'll only be using 3 of them now and I'll have 3 more open slots for more valves. My idea is this, I can take out the drain plug from the stock tank and get the pvc fittings required to install a valve there and run that pipe out of my garage. I will wire that valve up with one of my other stations so that when the sprinkler turns on it will open that valve and let the tank drain into my yard while one of the sprinkler zones is running. I will also T off of my main sprinkler line and add another valve there and run that line into my garage and into the stock tank. I will wire that valve up to its own station on the timer so that valve opens after the tank drains and fills it back up (should only take about 3 min. with the flow rate I'm getting from my pump, but I'll have to experiment with that to see how long to set it at). The idea is that every day the tank will empty itself and fill bak up with fresh well water automatically whenever my sprinkler runs in the morning. Hassle free for me, never have to change the water the hard way again. I should be able to keep a whole lot of bluegill alive for a long time until they eventually starve themselves I guess... but they are going to be flathead bait way before then anyway:smile2:. What do you think, will it work?