We moved and installed a new radiant metric hybrid pool last year. It went very well overall. I discovered that our well water and city fill water has a very high TA (around 460). I fought hard all last year adding gallons of MA to slowly get it down. I was able to get it to around 140 by seasons end. I fairly certain that this is something that I am going to be fighting forever so I am looking at a way to automate my MA administration. I also have SWG.
I have looked at the Hayward and Pentair liquid feed products. I have all Pentair setup with an easytouch control panel, with SWG, intelliflow pump and screen logic controls. The Pentair intellipH (abut $450-$500 would interface with what I have but is just a timed feeder.
I have another idea:
I used and own a Polaris Watermatic automatic chemical control system with ORP and pH controls. I brought it with me from our old pool when we moved and really thought about selling it as it is a very nice setup. I used it to feed bleach and MA in our old pool. The learning curve was very high as I went through the typical CYA level vs ORP issues. Took a good season of experimenting to finally be able to use it effectively. I am not interested in monitoring ORP just pH. In the past, I never had any problems with my pH sensor, it was my ORP sensor that drove me nuts. I had to keep my CYA below 30 to get it to function reliably.
I want your opinions, should I purchase the Pentair intellipH product or should I dismantle my Watermatic system (2 stenner pumps, contrller, etc) and just use the pH portion of the system? It is all mounted on a big board. I just need the one pump, the controller, and a 5-8 gallon container for the MA.
I kind of hate to dismantle this great system but I bet I couldn't get much over $500 for it if I were to sell it. So I already own what I need and know how to operate it but it is more than I need. I think it would be nice to have the pH sensor to control it vs just a timed system.
Please let me know what your thoughts are. I would probably need to purchase a new pH probe and stenner pump tubes but I could use what I have and make it work. I also thought I would wire the watermatic into my easytouch panel so that it only runs when the pump is on.