Yes, been playing with the bubble count, flow rate, etc, can;t get it dialed in to balance the ca and the PH on this large system. O, and the windows are shut most of th etime, getting cold up here

I ahve a new thought that I am probably going to implement. I need to get another 2-3 gallons per day of flow through my kalkwasser.Currently this is fed by myauto-top off in the sump, runs the RO/DI through the kalkwasser. If I have the RO/DIgo to a small (2-5gallon) holding tank first. I could then use a metering pump such as the litermeter III to continually dose/flow RO/DI through the kalkwasser. This would allow me to preciselpy dial in both the ca and the PH using the kalkwasser effluent.

I would have the RO/DI resovoir on an auto top-off so it will stay full and then I can superconcentrate the kalkwasser unit so I don't have to manually measure and dose every day.

The one battle is that it would require more dosing through the kalwasser than what my evaporation rate is. So 1) I would be slowly filling the sump more than is lost due to evaporation and 2) would slowly dilute my specific gravity or salt content int he system.

However, considering I will only be adding an excess of 2-3 gallons per day into a 600 gallons system, I do;t hink it will hav adverse affects on the inhibitants. Instead of having a liquid level switch in the sump, I would simply put an overflow valve in that drains out. I could then easily monitor the specific gravity and ad a cup or so of salt to the sump when needed. This is also like doing a couple gallons per day water change to the system. To me this is a lot easier than making up kalkwasser and trying to drip it from a jug, which would offset my current evaporation rate and work against me, and is also much more time consuming.

Thoughts/Comments?