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Well, the system won't be, in the beginning, but since the pumps have electronic variable interval timers, if I knew how much I wanted I think I could adjust the pump to deliver it. A little manual, but Chem Geeks numbers make me wonder if most spas don't run down to zero chlorine frequently...

Thanks Aquaman, good advice. On the chlorine inject, though, after reading Chem Geek's estimate of chlorine demand in the spa with a crowd, I think I will inject before my pool/spa valve so that I can use the pump to steadily add chlorine to the spa during spa-mode use; my previous idea of just...

Hoping to hook up my acid and chlorine injection pumps this weekend, and while the best return point for the chlorine seems obvious, (the floor cleaner heads, since that way the new chlorine will be swept over all the plaster surfaces first), I don't think I want to put acid over the plaster...

Thanks Frank, hadn't thought about the masonary disk. Will try that after the first month.

Our newly plastered (6/26) pool, while generally quite smooth (sort of like leather), has some rough areas near the edge marker tiles, I think due to being roughed up by the sponge as the plasterers cleaned off the tiles. We are steadily brushing, but it seems to have little effect on these...

Thanks Jason, sounds reasonable. I will go easy on the CaCl addition I was planning for this evening, perhaps only aim to bring it up to 160-170. By the way, thanks for the pool calculator!

I'm puzzled by the steadily declining behavior of CH that I'm seeing as I startup our new pool. I'm testing with the the TF-100 kit, aiming for a neutral startup of new white plaster in 50K gal pool. It was plastered/filled Friday. The fill water tested at pH 7.8, TA 100, and CH 200, with fill...

Frank, What has been your experience with Silicone Shield that leads you to say its garbage? I am more than curious, because based on conversations with three builders and three plasterers who are using it, the experience has been generally very good, and I am planning to use it on my plaster on...

I am one week from plaster, and trying to decide between two plaster additives that both claim to improve white plaster: Silicone Shield, and RPM, a silica fume product from Triton. Any experiences with either would be great to hear, particularly longer-term. Anybody used them? thanks, Bcatv

Thanks guys. Any features/reasons that one brand/model stands out among Rola-Chem, CAT, Autopilot, others? Do any of the ORP controllers allow for different mV goals to be used at different times of day? With the controller in the loop, is it possible to manually override and cause more chlorine...

I will soon have a new 50K gal plaster pool, and although I will start out feeding chlorine/acid manually, I would like to automate sanitation / pH as much as reasonable. I don't currently plan to use SWG, and have been looking at the peristaltic feed setups. Although I would prefer to automate...

Interesting, I'll have to pay attention to the gauges on mine when I finally get to run them. Maybe I'll tell the builder we need to add an air chamber just upstream of the the PCC valves to absorb the spikes. He already thinks I'm a nut, so I could probably get an entertaining rise out of him...

SBE, What is your source for the information on the Paramount valve function? If someone has done some real data collection that would be interesting. The Intelliflo VF also has been reported to have issues with the pressure variations from a solar loop opening and closing, that is why I went...

sbe, My PB only installs the PCC, so can't help you there, and I'm ashamed to say that my research before signing didn't go very deep, only enough to convince me that Paramount had substantial history with the system. I can tell you that this is the only system my PB installs, so I don't know...

For what it's worth, I also have researched the PCC-2000 a bit, before deciding to install it in my new build. One of my colleagues has the system in an 800sq ft pool that is directly adjacent to woods, and has found over 5 years that it does a generally excellent job of clearing leaves and dirt...

Thanks guys; while the rate of change is slowing, it seems clear there is some leakage, I just don't know what typical is from new valves and pumps/strainer covers. I think I will bring it up to 30 psi myself tomorrow and use up a few gallons of soapy water. There is probably close to a thousand...

Should have mentioned, this is air-only, no water in plumbing yet.

Building a new pool with lots of plumbing due to size and in-floor cleaner, and wondering what typical pressure leakdown during test is. Plumber pressurized to 20psi Thursday afternoon, 48 hours later one pump/cleaner set is down to 10psi, the other is at 16psi. 3 Pentair valves on the lower...