Dichlor question!

[thefloatqueen]

Hey everyone! I can’t seem to get my CYA up for very long, so I’m going to use dichlor this time since I like instant gratification lol. My question is, when I look at dichlor granule products on Amazon, many of the cheapest products (I only need a pound of it) say they are for spas and hot tubs. Can this still be used in pools? Is it just a marketing thing? Don’t lecture me about CYA and liquid chlorine, please. I only use LC, have a great test kit, and know how much I need to raise my CYA. This is a one time thing lol. Thanks in advance!!

 

[wireform]

Your last PM 11 days ago show 40 CYA and shortly before that 50. If you think the CYA doesn't last try another brand. Not sure what your trying to achieve with dichlor.

 

[Newdude]

It's just not as strong as trichlor. If you know where you're at, what you need, and what it'll do, then you're free to add anything.

Both a lb of Trichlor and Dichlor will raise your CYA by 8. Trichlor will add 15 FC vs 8.9 FC with Dichlor.

 

[thefloatqueen]

Your last PM 11 days ago show 40 CYA and shortly before that 50. If you think the CYA doesn't last try another brand. Not sure what you’re trying to achieve with dichlor.

My CYA testing is all over the place this summer. Recently, every time I have tested, it has been in the middle of the 40 marker. I think I underestimated a couple times. I only put 50 after I added stabilizer because that was SUPPOSED to be my new CYA. Further testing proved that my CYA was lower than I thought.

 

[thefloatqueen]

It's just not as strong as trichlor. If you know where you're at, what you need, and what it'll do, then you're free to add anything.

Both a lb of Trichlor and Dichlor will raise your CYA by 8. Trichlor will add 15 FC vs 8.9 FC with Dichlor.

I know that. My question is regarding dichlor products. Most of them on Amazon say they’re for hot tubs/spas and I’m wondering if I can use them in my 7500 gallon pool.

 

[thefloatqueen]

Your last PM 11 days ago show 40 CYA and shortly before that 50. If you think the CYA doesn't last try another brand. Not sure what your trying to achieve with dichlor.

Oh and I’ve tried 3 different brands of stabilizer this summer. Dichlor brings the CYA up the fastest and I appreciate the extra chlorination (I prepare for it by letting my FC level drift down to the lower acceptable level for my CYA before adding the dichlor.)

 

[Newdude]

I’m wondering if I can use them in my 7500 gallon pool.

Of course. It's all marketing because it wouldn't add up to much for me with 34k gallons.

 

[thefloatqueen]

This is one of MANY examples of cheaper dichlor products on Amazon that I am referring to. The 1 to 2 lb containers of dichlor (I don’t need more than that) are all I need. I’m wondering if I can use it in my 7500 gallon pool even though it is marketed for spas.

 

[thefloatqueen]

Of course. It's all marketing because it wouldn't add up to much for me with 34k gallons.

Okay, cool! I didn’t know if there was something different ingredient wise or something. The “pool” marketed dichlor “shock” products are so expensive! The spa/hot tub ones are much smaller bottles and much cheaper lol

 

[Newdude]

Know what you need and what it'll do. After that, they can call it whatevs and it's all good. Heck, most of us are buying Muriatic Acid for concrete etching.

 

[Bperry]

My CYA testing is all over the place this summer. Recently, every time I have tested, it has been in the middle of the 40 marker. I think I underestimated a couple times. I only put 50 after I added stabilizer because that was SUPPOSED to be my new CYA. Further testing proved that my CYA was lower than I thought.

For future reference, realize that the CYA test has an error tolerance of +\- 10ppm. That means if your true CYA is 50, the same sample can read 40 or 60 depending on how many times you do the test. You should only fill the test tube to each of the labeled decade markers and check if the dot is visible and keep going until it’s not, that way it’ll never be between 40 and 50.

 

[Newdude]

I find that by using the 10s, it's way easier to tell its not 60 and not 80, so I feel much better calling it a 70. Then I run FC for 90 because #teamrunhot.

 

[Mdragger88]

This is one of MANY examples of cheaper dichlor products on Amazon that I am referring to. The 1 to 2 lb containers of dichlor (I don’t need more than that) are all I need. I’m wondering if I can use it in my 7500 gallon pool even though it is marketed for spas. View attachment 529455

Yes- so long as it’s 99% dichlor & No xtra blu stuff.
Be aware of its acidic effects! & don’t let it rest on your beautiful liner!