[Matt_Wandell]

Originally posted by Paradox009
Some people use pumps such as an aqualifter with a timer, but if the timer malfunctions, the pump will not stop causing a big problem.

I use a peristaltic pump, which pumps in very small volume. A drip every second or so. Even if accidentally set to full blast, your only going to get a little more, which will not crash your tank.

I have my peristatlic pump pumping kalk water slightly less then the evaporation rate. I then have my rodi connected to a flaot valve in the sump, to complete all top off to ensure the same level consistently.

Once my 20 gallon resevoir is finished (approx. 3 weeks), I turn a valve on and the rodi fills it to the top, stopping it with a float valve. I then close the valve, throw kalk in, mix it once and leave it.

This process has worked great. Requires very little maintenance and does not have potential for disaster.