Is there a formula to determine how much Calcium Hardness per gallon of tap water will increase with the tap water testing at 90?
Calcium Hardness of Tap Water
- Thread starter VeronicaKG
- Start date
Short answer: yes. 0.0000000045 CH per gallon added to what's in there
Are you just adding, or are you trying to figure out how much to replace to lower CH? That uses a different formula. We'd need to know what the CH reading in the pool is now and what you're targeting.
Are you just adding, or are you trying to figure out how much to replace to lower CH? That uses a different formula. We'd need to know what the CH reading in the pool is now and what you're targeting.
Recently I discovered my Calcium Hardness was extremely high (3000) and I was going to do a water exchange but we have decided to do a RO instead. I was just trying to figure out how long it will be before I have to deal with this issue again. The previous owner was using Cal Hypo which caused this problem in the first place. I will be using liquid Chlorine with an occasional Trichlor to raise CYA when needed. So trying to avoid this ever happening again.
I'm going to try and negotiate the lowest effective CH when the RO is done so maybe around 200.
In the summer my CH climbs about 25/week due to evaporation. Since wind seems to have more effect on evaporation that temperature, I suspect you might have it a little worse. It's not too hard to keep the CSI in range up to about 800 CH, so after R/O, you should be good for quite a while.
I have a hose spigot on my pool plumbing. Sometimes I bleed off a couple inches to water the lawn, and the water that would have gone to the lawn goes to the pool. I also sent a couple thousand gallons down through my kitchen sink cleanout after clearing a clog. I figure that must have rinsed things clean.
I have a hose spigot on my pool plumbing. Sometimes I bleed off a couple inches to water the lawn, and the water that would have gone to the lawn goes to the pool. I also sent a couple thousand gallons down through my kitchen sink cleanout after clearing a clog. I figure that must have rinsed things clean.
Here in Mentone we have a septic system so when I was planning a water exchange I was persuaded just to an RO out of ease and less frustration and to just be done with it. We do have to add quite a bit of water due to evaporation in the summer. So was concerned how fast the CH would creep up.
If you can figure out your pools average depth it's pretty easy math.
My pool averages 60". I usually add when the water is 2" below a certain tile, and fill it higher. So figure 3" each time I add. That's conveniently 5% --- .05. Let's say my pool is at 600 CH and my fill water is 90.
600+ (90*.05) =604.5. Probably won't show up on a test.
If replacing, then (.95*600) +(90*.05) = 859.5. That WILL show up on a CH test!
My pool averages 60". I usually add when the water is 2" below a certain tile, and fill it higher. So figure 3" each time I add. That's conveniently 5% --- .05. Let's say my pool is at 600 CH and my fill water is 90.
600+ (90*.05) =604.5. Probably won't show up on a test.
If replacing, then (.95*600) +(90*.05) = 859.5. That WILL show up on a CH test!
Have you seen these filters that attach to your garden hose? Will using one of these take out any of the calcium in the tap water? Is there anything that you could attach to your garden hose that will?
Amazon.com : GARDEN HOSE POOL SPA AQUARIUM WATER PRE FILL FILTER Proline universal NEW FAST SHIPING ADVANCED FILTERING HOT TUB FISH TANK : Garden & Outdoor
Amazon.com : GARDEN HOSE POOL SPA AQUARIUM WATER PRE FILL FILTER Proline universal NEW FAST SHIPING ADVANCED FILTERING HOT TUB FISH TANK : Garden & Outdoor
Similar threads
