I’m hoping you can view my log and history even though I don’t really fully test more than every three or four weeks during this time of year. I’m curious why my calcium level would be increasing since it’s really not moved a whole bunch over the past year and I’m only using liquid chlorine right now and a little bit of acid once a week or so.
Why an increase in CH????
- Thread starter Sgalloway99
- Start date
Your fill water. The pool water evaporates, leaving the CH behind. Your fill water has new calcium which adds to it.
Test your fill source to see how high it is.
Test your fill source to see how high it is.
Just tested at 100. And I guess it could be less because I was doing five drops at a time multiplied by 10 obviously. Is it still safe to assume it’s fill water over the time and dissolved solids? If so if I decide to get ready to drain some water my next question would be I have an automatic overflow system with a pop-up in my yard with auto fill if I just run a water hose to the deep end would I be able to do an exchange utilizing my pop-ups?
Yup. You have a slow rise in CH compared to the folks in the south west, but more than me in the northeast.
This gets tricky as the hose unintendedly mixes the water. Then, depending on the variables, either the cold hose water or the heavier pool water (with dissolved solids) will settle on the bottom. Let's call in @mknauss. Hang tight.
- May 3, 2014
- 62,717
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I’ve read this before and looked again but it doesn’t address my question unless you are saying what I am asking should not or cannot be done. I’m asking about using. My pools over flow pop up system as a means to drain as I refill w hose a or do I have to use pump
It does but you need temp and TDS values and have to do the maths. If the math agrees, you will put the hose on the bottom of the deep end and use the overflow (aka 'pump'). If the math doesn't agree, then you will mix too much and need to add to the surface while pumping with a pump from the low spot. I was hoping the Martybot could just take an educated robot guess but he is right that there are alot of factors. Here is the how and why from that article :
Pump from the deep end or near the surface?
To determine whether you pump from the deep end of the pool or from near the surface of the pool, depends on your fill and pool water characteristic.Adding water to the deep end while pumping from a top step or near the surface is recommended if your fill water is much colder (>20F) then the pool water.
Put the pump in the deep end and fill from the shallow end if your fill water is nearly the same temperature as the pool water, you have a saltwater pool, or have very high CH. Put the fill hose in the skimmer, if you have one, in the shallow end. If no skimmer, then use a bucket to put the water hose in and have the top of the bucket above the pool water surface. Be sure to secure the hose to the bucket.
Replacing water in-place process depends on several factors:[4]
- Pool Water TDS (PWTDS)
- Pool Water Temperature (PWT)
- Fill Water TDS (FWTDS)
- Fill Water Temperature (FWT)
If DeltaT is positive, then you want to fill at the lowest point and extract at the surface and at the greatest distance from the lowest point.
If DeltaT is negative, then you want to extract at the lowest point and fill at the surface and at the greatest distance from the lowest point. <-Preferred as it is easier to do with a drain pump and you can fill inside one of the skimmers.
If |DeltaT| < 5, then there will be a lot of mixing.
I see thank you. I wasn’t considering it a pump since it’s just a flapper valve. I’ll look at this closer. On TDS - should get my own test or rely of pool store devil for this number
- Feb 6, 2015
- 7,828
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
- May 3, 2014
- 62,717
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
What are the chemistry data for your pool water?
I do not understand how pop-ups in the pool (you have an in floor cleaning system?) will allow you to drain from the surface.
I do not understand how pop-ups in the pool (you have an in floor cleaning system?) will allow you to drain from the surface.
- Feb 6, 2015
- 7,828
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
I read it as an auto overflow drain with a popup in the yard - AND - an autofill.
"... I have an automatic overflow system with a pop-up in my yard with auto fill ..."
PoolMath logs are showing when I looked for them.
- May 3, 2014
- 62,717
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I was on my phone and they did not show, grabbed my laptop and they do.
If this is NOT a salt water pool, your going to need very cold fill water versus your pool water to make the exchange work by adding water in the deepend. If your overflow can handle 1000's of gallons of water, then you can use it for your effluent.
I’m sorry I thought my pool data was being shared from my logs. I have an automatic fill but also an automatic overflow. The pop-ups run to my yard from the automatic overflow valve. The auto fill obviously comes from my house water. I’m not saying I need to drain any water at the moment I’m just making sure I understand how to do it if I could utilize somehow that system in the future. I’ve already added acid today
Attachments
OK I just saw your final reply after you saw my logs. If I wanted to use a submersible pump and obviously I could do that and just use a water hose?
- May 3, 2014
- 62,717
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Yes. But you still need to be sure the water parameters are pointed towards the fill at the deep end or at the surface. The article I linked goes over how to determine that.
It this is not a saltwater pool, use 1000 plus your CH level for TDS of the pool water. Fill water TDS use 100 plus the fill water CH.