Pool_Medic
In The Industry
I suspected the article was more fake news, god forbid journalists do proper research...but....we all know that the cya ratio got debunked eventually by Ben Powell.
Yes and no. I have run an overnight test several times in the last 2 weeks, but I was doing so trying to verify the production of chlorine, so my generator was set at 100%. If my generator is not producing chlorine, then my overnight loss is zero. If the cell is working, it's making just enough chlorine overnight to negate any losses, as the chlorine is testing the same post-sunset and pre-sunrise.@bigcountryhb - did you ever do an overnight chlorine loss test to rule out the possibility of algae?
SeaKlear and Orenda make products that are just pure, concentrated lanthanum chloride solutions (pH adjusted to be acidic). They are spec'd to remove 9,000 to 10,000ppb phosphates per 10,000 gallons of pool water. Those are the chemicals you want to use. PhosFree products are much weaker formulations (less LaCl3) and they often contain clarifiers or flocs. You don't want those as they are less effective formulations that cost just as much as the commercial products from SeaKlear or Orenda.
If you do attempt to lower phosphates, investing in a phosphate test kit (Taylor K-1106) is the best way to go as you get your own testing results without having to get the hard sell from the pool store.
@bigcountryhb should verify his phosphate level using the K-1106 and use that test to show the Jandy warranty guy.
So this is the big article that everyone cites as proof of the phosphate connection. Geeze. there is not one citation to anything that would lend it any authority. This is the authors opinion only and he includes one anecdotal story. Thanks for the breakdown 'Noise.Yep, I do remember that article and it’s completely devoid of any actual science
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I have an update on this situation. I am in complete shock! I lowered my phosphates to as close to zero as possible and my SWG started working just like new! I guess SeaKlear is now part of my regular routine.
Perhaps the 1000ppb reading is off, but it does concern me since this pool is only ~13 months old. From reading a few articles, 1000ppb should take several years to get that high. … maybe I've got a bunch of swimmers who are peeing in the pool.![]()
The search for the Magic Bullet never ends.
That phosphates matter in an SWG pool but not a conventional pool is a new one for me.Phosphates don't seem to be an issue in non-salt water pools, but there does seem to be some problems with SWGs due to phosphates.
You never posted the Phosphate levels prior to using Seaklear(either on your poollogs) and the after test. Do you have the numbers with the K-1106?I have an update on this situation. I am in complete shock! I lowered my phosphates to as close to zero as possible and my SWG started working just like new! I guess SeaKlear is now part of my regular routine.
That phosphates matter in an SWG pool but not a conventional pool is a new one for me.
The complexity of
1. testing for phosphates (many say it is not necessary and only treat in the Spring),
2. treating for the subsequent cloudiness when you add phosphates (or do you just let it clear of it's own accord?),
3. the idea that some municipal water intentionally adds phosphates
4. Not being able to use phosphates if you are on a well and use sequestrants
5. Not important in a non-SWG pool ???
All these are qualifiers put out there by proponents of PR, not detractors. I am a bit overwhelmed by that and I pretty much know my way around pool water chemistry.
Teaching all the above to newbies who often are clueless that chlorine is consumed in a pool, and you have a pretty good recipe for confusion and distraction of the primary Tenant of TFP........Keep adequate chlorine in your pool......the results of that one idea go a LOT further than encouraging folks to use PR.
Hayward has informed all that phosphates over 1000 ppb can in fact coat the blades rendering them useless. Phooey I said, until a client had a two year old cell that was producing zero chlorine, proper amps, used phosphate remover voila it’s working again. A commercial phosphate remover now is part of my diagnosis if amps are reading correct.
For my pool, when I got it up and running last year, I ran my SWG at 23% for 2 hrs/day through the winter. I had to increase it in the spring and am now running it at 100% for 2hrs/day to keep the same chlorine level.
Well done Pentair! At 125ppb (note the b for BILLION) this just left an out to deny a warrantee for almost every pool out there. Trying to get/stay lower than 125ppb is going to drive you nuts! Additionally, the idea is stupid. Why wouldn’t you just lower it an additional 25ppb and make it where algae can’t grow? Life cannot happen when phosphates are under 100ppb, so why not drop the phosphate levels that extra spit and just ignore the FC/CYA ratio all together? Trying to maintain lower than 125ppb phosphate level will drive you insane, promise.Pentair's manual states no more than 125ppb for phosphates so I'll assume it's definitely a SWG pool issue.
If I also mix in a chemical that has been proven to kill cockroaches almost instantly while having little effect on its surroundings, then I’d have less of an issue. Not saying a lower phosphate level doesn’t help, but I am saying chlorine is FAR more important the overall picture.Would you leave a bunch of food out in your house, knowing that you could get a cockroach infestation due to the food being left there? That's pretty much what we're doing when we ignore phosphate levels in our pools.
But you’re missing two key items, algae contains phosphates and phosphate testing is inaccurate when algae is present. If you’ve got algae in the water you’re left blindly adding phosphate removers. Even Orenda admits their test maybe inaccurate when algae is present.If someone needs to SLAM their pool, it would be prudent if they used phosphate remover in conjunction with dumping a ton of chlorine into their pool. I've SLAMed a previous pool and in retrospect, I wish that I had also tried to lower phosphates along with killing algae. I think it would have been much more effective.
Short term data at best with multiple variables. Was the CYA levels the same? Was the weather the same? Before jumping and insinuating that phosphates have ruined your cell after a year, but adding phosphate removers will fix it, let’s see more of a long term pattern. Not saying that phosphates can’t coat a cell, but I am saying that I’ll put money that the colder winter temps and less UV played a larger part in your overall chlorine demand than did phosphates.
Once it gets in your pool, when do you start testing again to see if you have reached a satisfactory level? What is that level? How do you keep it there?FWIW, I've ordered a quart of commercial SeaKlear phosphate remover and will be treating my pool with it