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I want to test them because I have shocked my pool using the method on this forum, and still couldn't get the FCL up. Plus I have Mustard Algea.

Nevermind. I found some info that says you can extend the upper limit of the 1,000 ppb test as follows. By testing 9 parts distilled water and 1 part pool water, then multiplying the results by 10.

Anyone know of a phosphates kit that will measure high levels (2,000 - 5000 ppb)?

Thank you

Anyone ever try a product called Extreme Clean?

Can someone please tell me the correct balance of Chems for a bromine hot tub (Br, PH, Aly, CH, CYA)?

Re: The Pool Calculator Thank you for the photo. Unfortunately, the algea depicted looks a lot like mine. What algeacide should I use? I shocked last nigh with the does of calcium hypochlorite recommended by the Pool Calculator. These were my readings before: CYA 55, FCL .2, TCL 3.6...

Thanks. I followed your directions and got an answer (about 6 lbs). I am wondering if I have Mustard Algea. Do you know where I can see a photo of it? To get rid of it requires an algeacide containing copper, right? (Has anyone tried placing copper tubing in the pool instead?)

I want to use the calculator to tell me how much shock to add to my pool. I inserted all of the data parameters, and it reads "17." I believe that is the ppm of FC it wants me to raise the level to. Correct? But, I do not see how many pounds of shock I should add to achieve this level.

Okay. Thanks. Well, I'm pretty sure that Phosphates are disrupting the ecosystem in my pool, so I hope the Chem I ordered will eliminate them. (They've been building up for 12 years now.)

Thanks. Should I shock, or use the Phosphate Remover 1st? Does it matter?

Perfect. Thank you.

Thank you for the explanation and additional info. I printed the chart. Then, I assume you would recommend that I ignore what I heard about the proper level of shock being enough shock to raise the Chlorine level 10 times the level of the Combined Chlorine? Also, any idea how much shock...

Thanks guys. I meant to also ask if CYA, or a substitute was available anyplace else besides a pool store.

In a Hot Tub using Bromine as the sanitizer, what are the ideal ranges for the following? Bromine PH TA (Total Alkalinity) CH (Calcium Hardness) CYA

In a SWG pool, what are the ideal ranges for the following? FC (Free Chlorine) PH TA (Total Alkalinity) CH (Calcium Hardness) CYA

My CYA is 55. What does that have to do with how much shock I need to add?

That's right. I now have a now have a saltwater chlorine generator (SWG). Like I said, I just installed it at the end of the season last year, and I haven't gotten it to maintain the FC level yet. My test for Phosphates only goes up to 1,000 ppb, so it may be anything above that. I sent away...

Is there a household chemical substitute for Stain & Scale Remover?

I want to shock my 28k IG SW pool. I heard I would need to add enough shock to raise the Chlorine level 10 times the level of my combined Chlorine. The shock I have is calcium hypochlorite. My Combined Chlorine level is 3.4 ppm. Therefore, I am aiming to add enough shock to obtain 34 ppm...

I don't know what happened. For 10 years, using Chlorine, I had no problems. Last year, I had a bad algea problem, and switched to SW at the end of the season. This year, I have not been able to get my Chlorine right yet. Someone suggested my Phosphates might be high, and depleting it. I...

I am shocking because I have about 3.4 ppm of Combined Chlorine, and .2 FC. In this case, should I shock or stablize 1st?

I would like to reduce my dependence pool store purchases as much as possible. Do I need to buy Calcium Hardness Increaser and Calcium Hardness Increaser at a pool store, or can I but them, or substitutes someplace else?

I have a SW IG pool that needs both Shock and Stabilizer (which is just about 1/3 low). Does it matter which one I add first?

Okay, I'll forget using a TDS test. Can you recommend a salt test using a reagent?

Can someone recommend a good test kit for salt level? Is a Total Dissolved Solids test O.K.?

I will give that a try then and let you know how I make out.

Thanks for your quick reply, and the link. I will read the article. Can you recommend a product to remove the Phosphates? Do you think that shocking, and removing the Phosphates will allow my Free Chlorine to increase? Should I remove the Phosphates 1st? Do you think I should up my CYA?

Hi, I have a vinyl lined 28k gal SW IG pool. I just got my test kit today. I have not been able to raise my Chlorine level. I would like to share my numbers and get some advice on what to do. Someone told me that Phosphates can deplete Chlorine, so I tested for that too. Here are my...

I have a recently installed sand filter for my 28k gal IG pool. For the previous 10yrs I had a cartridge filter, that worked fine up until last year. The algea was so bad then, and the earlier part of this year, that I was spending too much time dismantling the filter and cleaning the...