CYA over 100 with yellow/mustard algae

[chem geek]

The Orenda PR10,000 is one effective product and reasonably priced for the amount of phosphate it removes. A pint is around $25 and will remove 5000 ppb per 10,000 gallons so should be more than enough for your pool.

[MikeM]

Thanks chem geek. If those numbers are right, I would only need about an ounce of that product for my situation. Sounds like it may be too concentrated for normal residential pool use.

[chem geek]

You need to remove 1000 ppb from 18,000 gallons and for their product one quart (32 fluid ounces) removes 10,000 ppb from 10,000 gallons so you need (32 fluid ounces) * (1000 ppb / 10,000 ppb) * (18,000 gallons / 10,000 gallons) = 5.76 fluid ounces, NOT one ounce. Their pint has 16 fluid ounces so has more than you need, but it's not extraordinary and I don't think you'll find a less expensive bottle of another product.

[MikeM]

OK, my mistake. I reversed the 18/10 in my quick calculation. A couple quick questions: does this product contain a clarifier? Or will I need to buy a separate product for that? Where can I actually buy it? The orendatech.com site does not appear to have any sales functionality. I checked Amazon but they only sell 5 and 15 gallon sizes (a wee bit more than I need). A few pool sites appear to offer the smaller sizes, but not at the price you mentioned. Thanks.

[FormerBromineUser]

Chem Geek may be on later with his pricing although $25 may have been just an approximation. I have been looking to purchase some also. The cheapest I can find online for 1 pint is $23.91 plus $9.99 shipping for a total of $33.90. There is a store in McKinney (near Dallas) that has it in stock for $28.95 plus $2.39 tax totaling $31.34.

[MikeM]

Thanks. I'm not too far from McKinney, so that might be an option to get it into my pool quicker.

[FormerBromineUser]

McKinney Pools
1905 University Business Drive
Suite 602
McKinney, Texas 75071
972-542-9223

[chem geek]

OK, my mistake. I reversed the 18/10 in my quick calculation. A couple quick questions: does this product contain a clarifier? Or will I need to buy a separate product for that?

It does not have a clarifier and yes it will cloud the water but that will filter out so you'd only use a clarifier if you were impatient. If you want a clarifier, a couple of good ones are GLB Clear Blue and BioGuard Polysheen Blue.

Yes, my $25 was based on online prices but without shipping.

[FormerBromineUser]

Did you get it?

[MikeM]

Did you get it?

No. That store in McKinney has none in stock. In fact, no pool store within reasonable driving distance stocks the Orenda PR-10000. I've checked them all. I've not been able to find a reasonable online source either. All the online sellers fall into one or more of these categories:

1. Only sell the larger sizes.
2. Want to charge $15-25 to ship one pint.
3. Look really sketchy, like a 12-year-old built the website.

I don't understand why Amazon only sells the industrial size containers. Anyway, is there another product that you guys recommend, which I can actually get my hands on, preferably via Amazon? I was thinking about Kem-Tek. But PoolDoc had indicated that the Clorox product (which didn't work for me) is a re-labeled version of Kem-Tek. So I'm not sure that's a good option. There is a SeaKlear commercial phosphate remover which claims to remove 9000ppb per 10kgal for $43 and free shipping (1 qt). I think that makes it a better value than Orenda anyway, especially with free shipping, and almost same effectiveness. Any experience with this product?

Thanks!