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If that test was before this last drain, I would suspect you have one or two more like it to do. Be sure to fully circulate your pool for several hours after you get it full and do another CYA test.
 
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mknauss said:
If that test was before this last drain, I would suspect you have one or two more like it to do. Be sure to fully circulate your pool for several hours after you get it full and do another CYA test.
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Okay thank you so much for your help! We are suppose to be getting quite a bit of rain over the next couple of days so I am worried about draining to much water at a time. Is this something I should be worried about?
 
Depends on your water table in your area.
I have a water exchange method for pools but since you have all ready started a bit late for that.

To be safe, keep doing what you are doing. Hopefully your water cost is not very high.
 
Do you have a river or creek at the same elevation as your pool? When it rains, does water sit in your yard? When you dig a hole in your yard, does it fill with water? Some agencies publish water table elevations.
 
mknauss said:
Do you have a river or creek at the same elevation as your pool? When it rains, does water sit in your yard? When you dig a hole in your yard, does it fill with water? Some agencies publish water table elevations.
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Our house and pool sit on top of a hill so no water sits in the yard. I will do a little research and see if I can find any publications of the water table in our area.
 
Okay so I refilled the pool and I checked our water meter before and after and I replaced about 6 thousand gallons of water. I let the pump run for about 12 hours and then tested the CYA. I got a reading of 70. Will this be good for starting the SLAM process or should I replace more water?
 
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McClain14 said:
Okay so I refilled the pool and I checked our water meter before and after and I replaced about 6 thousand gallons of water. I let the pump run for about 12 hours and then tested the CYA. I got a reading of 70. Will this be good for starting the SLAM process or should I replace more water?
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CYA/70 is okay if you don't need to SLAM Process
 

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McClain14 said:
I do not mind exchanging more water. Do you have a suggestion on how much water to exchange this go around?
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This is marty's suggested method (bold highllights mine)
mknauss said:
A little more detail on the exchange process ---
You can exchange some water without draining.

If you place a low volume sump pump in the deep end and pull water from there while adding water in the shallow end (through a skimmer or into a bucket on a step so you lessen the water disturbance) you can do a fairly efficient exchange. That is assuming the water you are filling with is the same temperature or warmer than your pool water. If your fill water is much cooler than your pool water, then switch it. Add the water to the deep end (hose on bottom) and pull water from the top step.

The location of the pump and fill hose may change if you have salt water, high calcium, etc.
In my pool, with saltwater and high calcium when I drain, I put the pump in the deep end and hose in shallow end. The water in the pool weighs more per unit volume than the fill water from the hose.

Be sure to balance the water out and water in so the pool level stays the same. Also be sure your pool pump is disabled during this process. Once started do not stop until you have exchanged the amount of water you wish.
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So for a successful water exchange, you should run a full test set on both pool & fill water. That will determine pump & fill hose locations :)
 
McClain14 said:
I don't have a low volume sump pump so will draining and replacing water be okay?
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They can be rented from a local hardware store, but yes you can partial drain & refill as you have done :) Be sure to not drain too much, not sure if you are getting the rain we are!
You're aiming for a CYA under 50 or lower, so that SLAM Process FC is more manageable/economical, people have successfully slam'd at CYA/70, but it does take a lot of liquid chlorine/bleach!

Have we seen pic of your pool yet? :D (we like pics) ?
 
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splashpad said:
They can be rented from a local hardware store, but yes you can partial drain & refill as you have done :) Be sure to not drain too much, not sure if you are getting the rain we are!
You're aiming for a CYA under 50 or lower, so that SLAM Process FC is more manageable/economical, people have successfully slam'd at CYA/70, but it does take a lot of liquid chlorine/bleach!
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we are getting a pretty good amount of rain but I think that draining a foot of water should do it. I drained 2 feet (approx. 6,000 gallons) of water before the rain and it dropped my CYA by about 40%
 
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McClain14 said:
we are getting a pretty good amount of rain but I think that draining a foot of water should do it. I drained 2 feet (approx. 6,000 gallons) of water before the rain and it dropped my CYA by about 40%
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The more fresh water you can switch out, the easier/quicker your SLAM Process will go *and* much more manageable FC to CYA levels :D

Once you get it topped off again, do a CYA test, if the FC shock level is acceptable to you FC/CYA Levels, then run a full set of tests to make sure everything is good to go for your impending SLAM Process!
 
Alright so I am back with another question! Thank you all for being so helpful. I did a full set of tests on my pool and my calcium hardness is at 510!!!! What is my best course of action? I am assuming that replacing water is the best solution but we have really hard water where I live so is this even going to help?
 
McClain14 said:
Alright so I am back with another question! Thank you all for being so helpful. I did a full set of tests on my pool and my calcium hardness is at 510!!!! What is my best course of action? I am assuming that replacing water is the best solution but we have really hard water where I live so is this even going to help?
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Test your fill water, that will be the "lowest" CH you can "get", without trucking water in
If you have super hard water, you can stay away from Cal Hypo & calcium raisers for your pool :)

Most I've seen don't need to drain/refill until calcium is 800ppm+, just don’t intentionally raise it :)
 
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