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Acid injector for pool - help needed
I have a new plaster pool and they use lots of acid for the first year
or so. I've plumbed a line from the inlet side of my pump to a tank with 3 parts water, 1 part acid. I'm using irrigation drippers in line to regulate the flow and have it just right so it keeps the pool pH level correct. I know of other people who have done this and it works long term. My problem is that when the pump shuts off, a small amount of the acid still siphons into the pool plumbing. Maybe because the tank is slightly higher than the pool level? Its about a quart over night. I was thinking maybe a small spring loaded check valve would help, where just the spring pressure would be enough to stop the siphon flow, but when the pump is on and creates a vacuum, it would be enough to move the spring. Any ideas? |
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