Moderator note - moved from here: New Build - Stenner Pump?
I've read the other excellent posts about Stenner injection set ups - although most seemed to be for Chlorine vs acid. Still just a tad confused, mostly whether to go adjustable or go with a fixed/timer set up.
My acid demand for my 13K pool (high PH creep due to SWG + high areation via two spillovers) is approx 2 quarts every 4-5 days - maybe more - that's using the Leslie acid, and not the Home Depot watered down stuff. Even tho I have a nearby GFCI, I'd like to avoid the timer set up and hard wire the Stenner into my Aqua Logic PS4 panel so that it runs only when the pump is on. This would seem to eliminate any safety issues in the event of a timer malfunction or power outage that might have the Stenner runing when the pool pump is not (or is it that serious a concern?). So, does the foregoing not make the set up of [adjustable + sync with pool pump] the preferred way to go (vs if chlorine is the chemical?).
Also, am I correct that my acid injection amount per day would be considerably less than it would be if I were dispensing chlorine, correct? So I assume the Stenner 45MHP2 3GPD would be a good fit. (If I am not mixing up my Steener model numbers) with the 15 gal. and the 3/8" tubing. BTW< some sites selling Stenner products offer two kinds of tubing material; one which is acid compatible and one that is not. Other sites don't differentiate and so I guess I will have to call the store and ask them about the tubing material being sold as their stock 3/8" tubing.
I plan on a 2:1 ratio to perhaps make for a longer refill intervals, so I also assume this factors in to not needing a high rated Stenner model.
One last follow up question: why is the injection point before and not after the SWG???
Thanks for any input (and those prior posts about this subject).