The other day I was in a pool supply store, trying to buy a quart of Orenda PR10000. This sells for $37 online and I had bought it at the store previously for $60 in a prepackaged quart bottle.
Now the store sells only the much less concentrated Hasa product in bottles, but has a PR10000 in bulk that they use for their pool maintenance side of the business (PR10000 is the most effective phosphate remover per ounce). So I wanted to buy a quart of the bulk PR10000, and they didn't know how much to charge me so they started to calculate the price based on the effectiveness of the PR10000 versus the price and effectiveness of the Hasa, and came up with $108 a quart!
Anyway, I decided to do a spreadsheet of phosphate removers to see which was the most cost effective. This is using the dosages specified by the manufacturer.
Surprisingly, the Kemtek was the cheapest in the 32 ounce bottle, while the PR10000 was the cheapest once you move to the 1 gallon bottle. Phosfree (regular) was the most expensive by far, nearly seven times as expensive than the Kemtek, with Phosfree commercial and Hasa nearly 3x the cost of Kemtek.
| Kemtek|Orenda|Orenda| Hasa | Phos | Phos | |Phosph.| PR | PR | Phos | Free | Free | |Remover|10000 |10000 | Out | Reg. |Comcl.| --------------------------------------------- Ounces | 32.00 | 32.00|128.00| 32.00|101.50|101.50| --------------------------------------------- Price |$13.00 |$37.00|$109.00|$18.00|$40.00|$55.00| --------------------------------------------- Per Ounce | $0.41 | $1.16| $0.85| $0.56| $0.39| $0.54| --------------------------------------------- Cost (1) | $6.50 | $7.40| $5.45| $18.00|$42.17|$18.33|
- Cost to Bring PPB down by 1000 in a 20000 Gallon Pool