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I’ll second the dye-emitting fungus under the liner issue! I’ve only seen it twice. Recently, a liner pool in my care was leaking quite badly and the FC would fluctuate wildly with dilution (fill water). The leak fed a colony of fungus under the liner (apparently). Superchlorinating the...

Exactly! I would much prefer to do exactly what you are doing! I really do try to extend the life of equipment to the best of my ability. I also have to hedge for clients running a heater at 88ºF with air temps at 80ºF, hosting the kindergarten class of 2023, and leaving a slide running all...

I was just looking for a discussion on the merits and pitfalls of higher CYA concentrations. Instead of either starting a discussion or being directed to some other source, I received several repetitive posts on pool water maintenance in a highfalutin tone. I was a bit protracted in the...

I understand completely. I am developing a program to train my future techs and this is where I start. I am not looking for y'all to accommodate my trade, only muse with me on best practices. I always try to run minimums on equipment (to clarify a recent comment). I definitely need a good...

I think we are vibing! I appreciate the support from across the aisle! I have 60% saltwater pools. None are above 40ppm CYA. I live in Augusta, Ga. It's 92ºF right now. I get a 1ppm at times, but usually around 2ppm or slightly more. The runtimes vary and I tend to leave the runtimes...

Absolutely! That’s what my experience had shown. Example of what I am dealing with: I have one seven (7) day per week commercial pool right now: • 80,000 gallons • 1200 - 1800 gallons of water loss per day • fill line timed for 1.5 hours in 15 minutes increments every day • Random bather load...

It's not that I don't believe you or that CYA does what it's purported to do. mgtfp shared scholarly articles recently. When reading those, anyone will find a sense of professionalism that is beyond reproach. However, even those studies are scrutinized by peers.

Now, that make sense and without too much condescension and Now, that make sense and without too much sanctimonious condescension. Again, I am not arguing the feed rates of SWCGs or manually dosing with bleach or injecting bleach with a metering pump. I am arguing for moderation. High CYA...

I really like the Assessing the Impact of Cyanuric Acid on Bather’s Risk of Gastrointestinal Illness at Swimming Pools article. I've read it before and it affirms my position. I am constrained by local health codes, however. There are A LOT of commercial pools that rely on large...

I up to speed on the TFP method and I'm not challenging it. I'm seeing holes in the recommendation to run high CYA with saltwater pools. That's it. It's not even that TFP recommends running high CYA (and I think that's why I am being met with derogatory comments from admins and members -...

Exactly! However, FC can be consumed faster than it is added where CYA remains relatively constant (or increasing if using a trichlor tab feeder).

All dealerships are required by law to sell other manufacturer's vehicles. Yeah, I've been doing this successfully for just as long as TFP. Y'all are very coarse people. I'm not debating anything. I'm only looking for smart people that know about things that I am interested in. Usually...

I completely boogered that comment! NaCl is dissolved into water and disassociates. The Cl- is used to produce CL2 and eventually HOCL. The reduction of HOCL produces CL- among other things. CL- rejoins “hanging out” with Na. Table salt is the most efficient and cost effective way to get...

The association of chlorine with CYA is governed by reversible reactions, such that as unbound chlorine is used, more is released. As a result of these equilibria, CYA functions as a free chlorine buffer. However, binding of chlorine to CYA reduces the concentration of the most biocidal form of...

I can accept that the reasoning for the difference in recommended CYA concentration is due to reliability of chlorine introduction. However, that should be more transparent instead of propping up SWCGs. It’s bad reporting just like using jargon that makes understanding more difficult. If you...

CT times to inactivate E.coli and crypto have been definitively proven to be extended with higher CYA concentrations. Period. No contest. The sanitation potential of chlorine is reduced, probably by several factors including pH, but chlorinated cyanurates are weak at sanitizing. Period. No...

Exactly. Apologies for construing chloride with “salt”. I do know the difference. When speaking with homeowners, it’s easier to use common words and I tend to just keep saying it.

You expertly danced around the question expertly and you say that you’re not into politics, 😂. SWCG produce relatively small amounts of chlorine gas (CL2) over a specific runtime. That same amount can be introduced using any other means (even chlorine gas itself) but have a different FC to CYA...

I’m here swimming in the deep end b/c I totally understand more than the basics. I’m asking about real deal chemistry. I’m not licking my finger to find the direction of the wind. I have a degree in math and a lot of hours in advanced chemistry, engineering and computer science. I’m not a...

I read Chem Geek’s thread and is why posted! I really appreciate you taking the time to reply! I’m not trying to argue with the results of higher CYA in SWCG pools; however, it completely breaks with the FC to CYA ratio and w/o much explanation of why. That’s what I’m driving at by asking...

I get that, 100%. But the TFP method isn’t so fragile that it needs to be defended by censorship. I’ve read the forum rules and I’ve read the TFP method. I agree with the methodology for the most part and I recommend the platform to my clients. However, I don’t see where the TFP extends to...

Some energy is released from the system as nitrogen and some chloride reforms with sodium to return to salt. The process repeats. I was more interested in the photo-reactivity of the reaction. Is UV not a contributing factor? It may not be and the shielding effect is purely a positive...

I agree with the chemistry there, 100%. However, pools have varying depths and areas of low circulation. I have pools where I can run a 1.0 and be perfectly fine. I also have pools with zero entries that will get spot algae without a minimum of 3ppm. Basically, checking on the pool twice to...

Totally agree! I try to get at least a 2-3ppm FC with all of my SWCG pools. However, that target also requires a good deal of micro-managing. My clients are all hands-off but will heat the water and add water or have a pool party without telling me. Running higher CYA works in the between...

Exactly! Equilibrium reaction along with redox. However, the stated CYA:FC implies that the either the reactions are slow (which account for the increase in CT times relative to CYA ppm and not chlorinated cyanurate ppm) or that equilibrium isn’t the sole factor (or the equilibrium is being...

:ROFLMAO: I’ve tried to post a few messages. They are either removed, heavily edited or I get banned. I was just banned a while ago for not having any posts! I also just tried to post to a thread were a person in Arizona is having trouble with an indoor pool FC under an IC SWCG. I just...

It seems that my account doesn't have the privileges to start a new conversation in order to send a private message to a member. It's been a few days since I emailed the webmaster for support and I haven't received a reply, so I'm trying this approach. I really enjoyed reading the technical...