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So, I've had a nylon sock filled with granular stabilizer hanging in front of a return jet for a week and it's barely dissolved (the water is 46f). In an effort to add CYA faster (because I'm impatient), I put some in a jug, added hot water and stirred vigorously and left it out overnight in my...

After 3 days of killing algae (see my other post - 2nd pic here is the SLAMed and filtered result), I'm cleaning the filters. I've currently cleaned one (on the right). Should I just throw them away, or will any algae I don't get out be killed by the chlorine? Thanks.

Sodium Salt of 1 Hydroxyethylidene-1.1-Diphosphonic Acid I see 'phosphonic' which I think is good. What is the salt part? Thanks.

Burlington, Ontario, Canada. Opened on March 20. First time in 14 openings (15 years of pool ownership) that I had algae. Not sure why this time (Covid? Lol). It was a slimy layer completely covering the floor of the liner until I brushed it and ended up with the green soup you see in the...

Found a stain and scale product that contains this stuff - 2-phosphonobutane-1,2,4-tricarboxylic acid. Is this a good thing? I find with the current stain and scale I'm using (Sani Marc 3 Met 0) = 1) Doesn't seem as effective as other brands I've used, and 2) Seems to consume chlorine as...

Considering how it was plumbed previously (the solar diverter valve and check valve etc., that I wanted to save) and the height of the sand filter in and out vs the height of the cartridge filter in and out, I think the installer did a good job. The only thing that looks bad (to me) is the...

Hi. I am hoping to swap in this Hayward C3030 to replace my sand filter. The current plumbing doesn't look very efficient to me. Any suggestions, keeping in mind that I would like, if possible, to keep / reuse the check valve before the sand filter and also the solar diversion valve thing...

Just a head's up. Don't let your installer (two different pool stores told me it couldn't be done) tell you that a Hayward VS pump can't be controlled by a Jandy or other third party control panel. Hayward has excellent technical guides showing a number of ways that a VS pump can be controlled...

I just installed a Hayward TriStar VS900 variable speed pump. My chlorinator is a Zodiac DuoClear 130. My old system was a single speed TriStar. I have a Jandy PDA system to set timers etc. With the old system, the pump was on the PDA timer and when it was off, the chlorinator was off (I...

I had a TriStar VS installed today. My controller is a Jandy PDA system with the Jandy sub panel box thingy. Because I want it to run faster when the solar is on and slower when the solar is off, I've had it wired in 'relay' mode rather than 'stand alone' mode (so the solar and cleaner JVA...

Hi all. I just installed this FlowVis in preparation for a TriStar VS900 variable speed pump being installed in the next few days. My system is currently a Tristar non VS and it shows 1 HP and 1.85 HP (I think maybe it says SF here as well - service factor, whatever that means). I have a sand...

There are many pool stores in my area, all carrying different brands of stain and scale control. I can tell immediately, if the product is phosphonic acid / etidronic acid as the metal stains on my white stairs disappear within minutes as opposed to the non phosphonic (usuallly labelled...

Found a couple of bottles being cleared out at my local pool store. Is this a decent sequestrant? Thanks. Most recent MSDS (from 2015) shows Hexametaphosphate 60-70 % SODIUM CHLORIDE 15-25 % Sodium Citrate 10-20 % ________ Another MSDS for same product shows 7 - 17 for the...

I know if you bring the chlorine level up too quickly after and AA treatment for metal stains, the stains can come back. Will the same thing happen with an oxidizer (so called non-chlorine shock). Thanks.

At least there was no ice on the water, like when I opened last year..lol. Start up shock with stabilizer, then baking soda, then Mule Team Borax, then liquid chlorine. 12 hrs of filtering, a bit of vacuuming and it's crysal clear (except metal staining on fiberglas stairs (vit C treatment...

Does an ascorbic acid treatment consume non chlorine shock like it consumes regular chlorine? Would using this be an option instead of algaecide to ensure no algae bloom during an AA treatment? Thanks.

I've been battling metal staining in my pool for most of this season. Ascorbic Acid in the form of vitamin C works well and so does Citric Acid (Natural Chemistry Stain Free for example) in removing the stains. The local pool store suggested 3-Met-0 Plus by Sani Marc (note 3-Met-0 is a liquid...

OK..I'll admit, I might have opened a bit too early this year. Yes, that's ice in the pool. Second pic was a couple weeks later when it actually snowed..lol

I saw this new product at a local store. It's made by HTH...HTH Weekly Power Pod - 3 in 1 clarifier, enzyme cleaner and phosphate remover. It comes in one of those pouches that dissolve in water (like a laundry or dishwasher pod). Ingredients listed on package are zirconium acetate and Pepsin...

I have bottle of Vitamin C tablets (not chewable, or capsules, or time release, just plain pills). The label says Vitamin C (ascorbic acid, 500mg). I've been using them on my steps to remove metal staining. They work great. However, I'm wondering if the other ingredients will have any effect...

So I tested this product in 2011 - see here culator-ready-to-test-t33989.html At that time I never had the pool water tested for metals, although I was seeing brownish staining that readily disappeared with a vitamin c tablet. I'm still getting metal staining that easily lifts off with...

I just got off the phone with Hayward, and the tech guy I was talking to thinks my pump is too big for my system and my lines too small. He was a bit surprised that it has been working since 2007 without failing (working too hard to push the water through the 1.5 inch lines???) Here is what...

I notice a little bit of sand swirling in sight glass and in driveway where water comes out of hose when backwashing. Is this normal or should I be looking for a problem? Thanks.

I had a solar system installed back in 2007 and the installer placed the vacuum relief valve way up high just below the roof (on the pipe just before they turned onto the roof itself to connect to the solar panels). A few days ago, a friend had the same company install a system on her pool...

Most of the metal stain and scale products I've seen at my local pool stores contain phosphonic acid or citric acid (Natural Chemistry with their phosphate free products). I found one today that has Edta tetra sodium. Does anyone know if one is better than the other?

I know the low salt light will come on if the water drops below 65f in my system (Zodiac Duoclear 130 (mineral cartridge removed!!)) even if there is the correct amount of salt. Is it OK to keep the system running with water below 65 or will the cold water affect the process that produces the...

Aside from doing an ascorbic acid treatment prior to closing in October last year, I closed in my normal manner. We had a milder than usual winter, but still had below freezing temperatures, just not long spells - more like one or two days, then hovering around freezing again instead of weeks...

Hi everyone. Opened my pool yesterday (earliest opening ever for me - usually I open first week in April or thereabouts, but it's been way above seasonal here and long term forecasts show highs in the teens (celsius) right through till the end of March). Anyway, when I took the caps off my...

This only happened because it's the end of the season where I live and I have not been checking the pool daily as I do during the summer. 1. Leave a bag of steel wool outside near the pool (I was using it for rodent control in my pumphouse (blocking entry points). 2. Have a couple of windy...

What's all this other stuff in bleach? http://www.cloroxcsr.com/product-detail ... ularbleach Would I be better off using this instead, which looks like it's only in Canada, eh http://www.cloroxcsr.com/canada-product ... tingliquid I notice they both have a PH of around 12.