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I am 99% certain the issue is sunscreen. The spa tiles colour came right during winter and now as soon as we start swimming again (with sunscreen on) this happens. The only thing different in the water is bodies and sunscreen. PH, Alkalinity etc always fine. It's a slightly sticky film. Gotta...

My glass fencing has quite a few water marks. I thought that cleaning with my electric car polisher (see below) might makes things easier? I also got some instructions from AI as follows: Anyone have any thoughts if this is a good idea or a stupid idea? :cheers:

No further ideas @JamesW? Thanks

Well, the excess bromine burned off. However, @JamesW the stain was completely unaffected by Vitamin C. I made a thick paste and scrubbed hard. No change whatsoever! :cry:

After replacing the spa water entirely, bromine is once again off the charts after just 2 weeks. I am removing my bromine tabs, keeping the filter and UV thingee on its usual timer, and keeping the cover off for the next week to see what happens. The excess bromine should burn off? Also, the...

Not yet, TBH I've already bought so many different things trying to remove these stains... I have some pumice stone on the way that I know works 100%. My plan is to drain the spa over the coming days and start from scratch. It was all going so well until recently! I am hopeful that it's simply...

Please see attached. I also tried a liquid PH test and the result was purple. Which I have read can mean that sanitizer levels are off the chart!? One more thing - if this is a new spa and I haven't changed the water for 4 months, could that be the issue? The installers told me how to do...

Thanks, as in Vitamin C right? Will try and source some. Yep, I do. I will take a shot of it and post here later in the week. If it might help, our kids wear a ton of sunscreen? Thanks!

Hi @ajw222. It's weird because my test strips were indeed saying Bromine was extremely high. But I've attached my results and everything was essentially in order.

I got my water professionally tested at a shop and everything was spot on apparently. I had been using strips, which I have learned are a waste of time. Anyway, the calcium hardness was WAY down based on some VERY heavy rain we have been having (dilution). Could that be linked to the yellow...

Thanks, so in other words, my bromine dispenser is working too much? I've attached what I have below. It's currently set on level 2 out of 5 and produces a slight stream of water from the top, down the bottom, through the tablets, and into the system. The pump runs roughly 4-5 hours each day...

Anyone know what this yellow discoloration is? Only happens around the tiles around our spa (not our pool) and so is coming from the spa water/reaction. Our spa uses a bromine dispenser. The tiles are marble. The yellow coloring doesn't come off easily. I can usually only get it off by using a...

Wow, you guys know your chemicals. Thank you for explaining it all out!

Thanks, but I already know you guys don't recommend that system. Yeah I thought it was weird too, their article. I have a copper ionizer by the way.

Thanks again. I have a "naked" / copper system. We have the pool at 29°C / 84.2°F I looked up calcium flakes on my filter vendor website and they came back with this article - it all seems not possible though, because the pool is only 2 months old and PH has never been high?

Hi, PH is about 7 (I just added some baking soda to increase that) and alkalinity is 80-100. The stuff looks like flakes but breaks into sand when you rub. Also, all other aspects of the pool are fantastic - eg, no sore eyes, rashes, algae, etc, etc. Very clean and clear. Thanks!

Our pool is about 2 months old and I see the attached in the robovac consistently. Is it just the pool plaster getting settled in?

There is no problem currently. I just stated what kind of system I have in my brand new pool.

Is it possible to remove copper stains? From a brief search I just had online, it appears so. Also, I seems I just need to keep my pH levels down?

Interesting - thanks! They are very popular here. It's too late now for other options, will see how I get on haha!

Hi everyone We just got a concrete plastered pool installed. (Edit by Jim R.) We have a tiled spa too. It's my first time owning a pool and I am hoping to do the chemicals myself. I have learned everything I can from the 5 weeks of valets we have had. Anyway, this forum seems like a great...