FuNkSty;5116426; said:wow, great link. Looks like an awesome setup. Unfortunately there's no way i can get all those parts. Most online sellers dont deliver to this country.
Guess i'm destined to use buckets forever! 40% WC on a 140g tank.......
One thing I thought about doing was this.
Drill the tank for the drain and put a solenoid on it, then run a water line and put a solenoid on it. Then hook them both to timers, then have a very small dosing pump or aqualifter connected to prime also on a timer.
You set the drain timer to open however long it takes to drain the tank, "you will have to time it the first time" Then you have the dosing pump come on after the draining is complete, and finally the fill line come on. you would have to time all of these operations the first time so you know how long it takes. I would also have the fill line set to stop just before its done, and fill the last little bit by hand just to be safe.
Or
you could have a large water storage tank with pre dechlorinated water and have a pump on a timer.