jkassner Posted June 17, 2008 Report Share Posted June 17, 2008 We are trying to get water balanced in order to get our SWG going. Pool is inground, vinyl liner, 33,000 gallons. The pool has been open 5 days. Here are results form pool store test: Free chlorine: .5 ppm Total Chlorine: 0.0 ppm Combined chlorine: -0.5 ppm pH: 7.7 Hardness: 80 ppm Alkalinity (w/stabilizer correction): 116 ppm CYA: 15 ppm I put in 4 gallons of 10% pool chlorine last night and it is gone today. I am concerned because pool store wants me to add 10 lbs. of calcium. Is this really necessary? The water looks great as of now. I am afraid calcium will make it cloudy. They also suggested 4 lbs. of CYA, which I know it needs. Can anyone help me with the calcium question? Thanks! Quote Link to comment Share on other sites More sharing options...
AlphaChaotic Posted June 18, 2008 Report Share Posted June 18, 2008 Hey J, I would recommend lowering your PH to a more comfortable range of 7.4-7.6. Human tears are approx 7.4. I would increase my calcium hardness to approx. 150 ppm. And you definitely, definitely, definitely want to get your CYA up to 80 ppm. I would then follow by showing with DiChlor Shock or a lithium-based shock at a rate of 1 pound per 5000 gallons. Quote Link to comment Share on other sites More sharing options...
AlphaChaotic Posted June 18, 2008 Report Share Posted June 18, 2008 As well, I will say that calcium hardness is not so important in a liner pool. Should you have had gunite, I would definitely say you want your calcium hardness to be at a higher level. Do you have tiling along the top of your pool? That could be a concern for you running at lower levels of hardness. Quote Link to comment Share on other sites More sharing options...
jkassner Posted June 18, 2008 Author Report Share Posted June 18, 2008 As well, I will say that calcium hardness is not so important in a liner pool. Should you have had gunite, I would definitely say you want your calcium hardness to be at a higher level. Do you have tiling along the top of your pool? That could be a concern for you running at lower levels of hardness. The liner does not have tiling. Quote Link to comment Share on other sites More sharing options...
yitbos1 Posted June 18, 2008 Report Share Posted June 18, 2008 Your CH is fine. You have a vinyl liner, so I wouldn't bother with raising the CH. Your CYA does need to be increased, but you do not need 80. Anything over 50 is really not necessary. Quote Link to comment Share on other sites More sharing options...
wrabon Posted June 18, 2008 Report Share Posted June 18, 2008 I'm not sure what type of SWG you're installing, but I have a Polaris AutoClear Plus. It recommends a CYA of 80-100ppm, which is higher than for regular chlorine pools. I'm pretty sure this is the case for most swg systems, which require this slightly higher CYA. So make sure you check your swg's recommendation for CYA. I think the 50ppm recommended previously may be too low for a swg system. You don't want it higher than 100 for the swg, but I'm pretty sure 50 isn't high enough. Check your swg manual to make sure of the recommendation for your particular system. Good luck! Quote Link to comment Share on other sites More sharing options...
jkassner Posted June 18, 2008 Author Report Share Posted June 18, 2008 I'm not sure what type of SWG you're installing, but I have a Polaris AutoClear Plus. It recommends a CYA of 80-100ppm, which is higher than for regular chlorine pools. I'm pretty sure this is the case for most swg systems, which require this slightly higher CYA. So make sure you check your swg's recommendation for CYA. I think the 50ppm recommended previously may be too low for a swg system. You don't want it higher than 100 for the swg, but I'm pretty sure 50 isn't high enough. Check your swg manual to make sure of the recommendation for your particular system. Good luck! The SWG is an Aqua Logic by Goldline Controls. The manual recommends the stabilizer to be 60-80 ppm. Would something in between be best? It also recommends the Calcium to be 200-400 ppm. I really don't want to add any calcium since the water is crystal clear now and I'm afraid it might turn cloudy. I wish I knew more about all this!! Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
yitbos1 Posted June 18, 2008 Report Share Posted June 18, 2008 Your CH is fine. You have a vinyl liner, so I wouldn't bother with raising the CH. Your CYA does need to be increased, but you do not need 80. Anything over 50 is really not necessary. Sorry for the above recommendation. I must've forgotten that you are installing a SWG. My bad! Quote Link to comment Share on other sites More sharing options...
wrabon Posted June 18, 2008 Report Share Posted June 18, 2008 I'm not sure about CH. It is my understannding that if you have a liner pool you do not have to worry about CH, unless you have tiling around the top. But I may be wrong. Quote Link to comment Share on other sites More sharing options...
Strannik Posted June 21, 2008 Report Share Posted June 21, 2008 CH is only a concern when the pool walls and bottom are made out of materials containing calcium. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.