First time I"ve heard of it....but my pool is very rarely calm so it wouldn't matter! :)
Janet
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First time I"ve heard of it....but my pool is very rarely calm so it wouldn't matter! :)
Janet
I have heard that and I have also heard the opposite, that it sinks to the bottom and it is removed by shutting off the skimmers and opening the main drain. I have heard these conflicting stories at product trainings put on by manufacturers that I attended.Quote:
Originally Posted by StevenB92
BTW! I can tell stories about some of the slight of hand "demos" that I've seen at these too, like the one that 'proved' that MPS makes chlorine 'reappear in the water --glass of tap water which will have chlorine, add OTO so it turns yellow, stick in finger which uses up the chlorine so water turns colorless, add a pinch of MPS (non chlorine shock) and yellow returns but NOT because the chlorine reappeared ad the trainer (who was president of this particular product company!) said but because OTO will turn yellow in the presence of any oxidizer and is not specific for chlorine!)
Is it any wonder that many pool stores give out so much misinformation? Most of what they learn about water chemistry comes from 'trainings' like this!
Getting back to CYA, both are false. Once CYA dissolves it exists as an ionic species in the water and will be evenly distributed as cyanuate ion through out the water. It's basic chemistry!
My pool liner is puckering like crazy and idea why? I read somewhere that damage can be done to the liner if Ph is too low. Mine was 6.? for a week or so. Do you think it will last through the summer?
Thanks in advance.
pH getting too low WILL pucker the liner--is it on the sides, or has it started on the bottom? I would measure your pH and adjust it to 7.2-7.8, ASAP--as far as how long it will last, I have no idea--depends on whether any water has gotten behind it, in what shape the seams are, etc. You'll just have to adjust your water chemistry and hope for the best!
Janet
ph has been 7.5 since I started this thread, than to you folks. The puckering is only on the sides. We also patched a hole at the top of the liner this year.
Ph 7.5
Alk 130
Chlorine 8
can't measure cc because I am waiting for more regeant to arrive. I ordered the wrong stuff instead of 0871 I ordered R-0002 DPD Reagent #2!
Water looks great!
PS I got my cya down to 85-90!!
Yay!! :D :D :DQuote:
Originally Posted by Sue225
Now at least it should be more manageable. Your other numbers look good to me--hope your liner holds the rest of the season!!
Janet
After lots of rain and vacuuming to waste then refilling, my CYA is down to 50!!
Last night I vacuumed to waste and cleaned the bottom of the pool, backwashed, then shut the pump off. This AM the pool was crystal clear with nothing at the bottom of pool. After 2 hours of filtering this AM I noticed the brown stuff gathering again. So, I am thinking that the problem is the filter. I am going to add DE this PM or, do you think I should flock?
You people are the best! I don't think in all the years I have owned a pool, my pool has been better balanced and beautiful! Thanks again
You can always add a little DE if you want--just enough to make the pressure rise by 1 ppm--and it may help filter out smaller stuff. Don't forget that the pressure rise takes a few minutes though, so add it slowly.
I don't think adding floc is going to help--it is designed to make smaller particles that won't settle to the bottom stick together so it will settle. Sounds like yours is settling fine, so there's no need for the floc.
Good job getting the CYA down to 50--now just maintain your chlorine in the 3-6 ppm range. Actually, I would keep it on the upper end of that, but it should be easier to maintain your pool now.
Janet
Janet means 1 psi, not 1 ppm. (Pound/square inch, not parts per million).Quote:
Originally Posted by aylad
oops, yeah--thanks for catching that for me!! :o
Janet
Her brain is probably just tired having to cover PF so much while I am traveling and not around to help as much as usual!
I added about 1 cup of de to sand filter and it appears to have blown into the pool. Is this normal? Also, the pressure never went up. Should I add more DE?
It is not normal for the DE to blow into the pool. Did you add it slowly through the skimmer? It should have gone in and coated the sand but not gone through it. How long has it been since you backwashed the filter? Sounds like maybe the sand in your filter is "channeling"--that sometimes happens with very old sand or with a pump that is too big for the filter, where it creates channels in the sand. That might explain why it's not filtering the "brown stuff" out to begin with. Have you checked to see if the "brown stuff" is gritty, maybe it's sand blowing back into the pool?
If you haven't backwashed lately, go ahead and backwash well, then rinse well, then put it back to filter and try a little more DE. I think I'd start with about 1/3-1/2 cup, though, just in case it blows through. If it blows through this time after backwashing, then you've got filter issues that need to be resolved.
Janet
I have suspected, since I subscribed to this forum, that our pump is too powerful for our filter. 1 1/2 HP pump for Silica I filter. 24 round UG pool! Our pressure never goes up and very little dirty water is backwashed out. Of course, my husband doesn't want to hear it but I am pretty sure this is the problem. The brown stuff is definately not gritty.
We replace the sand every summer. At the end of the season it is white as snow, normal?
Your thoughts appreciated
Why do you replace the sand? I never do and neither do any of the mods. I'm in my 8th season and Al is in season 13 or 14 with his sand. I suspect it's white from being agitated too much by too big a pump for it.
I suggest you get a bigger sand filter. Performance will improve and you'll not need to replace the sand.
I agree with Carl, you shouldn't have to replace the sand. I've replaced mine once in 8 years, but that's because I got a new filter and changed over to Zeolite. Otherwise, there's no need to change it out unless you're converting from a Baquacil pool. I think that a 1 1/2 HP pump is definitely overkill for your pool, and probably is making your filter very ineffective. I strongly encourage you to get either a smaller pump or a larger filter.
Janet
We have always replaced the sand for no apparent reason. We just thought you were supposed to replace it for efficiency.
I think someone (pool store) told us that a bigger pump would cut down on the time for running filter! We never questioned it. Will definately talk to husband about replacing for next summer.
We are in NW indiana and have only about 1 more month of swimming then grandkids go back to school and no one will use it for the next month (at least that is the way past summers have went). We usually cover pool by mid Sept. Maybe this year we will wait until leaves start falling in Oct.
It's easy to forget that the pump turns the water over--it's the filter that actually cleans the stuff out of the water. Granted, a bigger pump may turn it over faster, but if the filter can't handle the load, then it's defeating the purpose (and actually more expensive) to have the bigger pump.Quote:
Originally Posted by Sue225
Janet
This would explain why my water is clear but a different color blue. I am using a skimmer sock until we can replace filter or pump. Amazing how much crud the sock filters out. Problem is I have to clean it every couple of hours or so. I am noticing some gritty dirt (sand) in the sock. I'm thinking the filtration has been the problem all along.
Would the filter be throwing off sand?
If the pump is too powerful, it can force stuff right through the filter and into the pool. Over time, it will also damage the filter.
Bingo! This has been the problem all along. Why dead algae would not filter out, dull water, and pressure never going up on filter. Pressure has been at 18 all summer, never up-never down. No dirty water when backwashing, either!
Thank you so much for all your help! I wonder how many other people leave out vital information when they present a problem to you? When I read the word "channeling" and read about recirculating water w/o proper filtering (someone's thread on pool forum) something went off in my head. This forum is the best resource for pool owners ever!!
My problem started off with algae and dull water color afterwards. Now I get it!
I feel like I am rambling so, ttyl!!