Here are all the brands we've identified as unmixed HEDP -- dilutions range from full strength (60%) down to 1/3 strength. One huge caution; manufacturer's can, and do, replace ingredients with other chemicals or other dilutions without warning.
HEDP:Jack's Magic Blue Stuff (20% solution)We're pretty sure these two products are HEDP, in the dilutions described, as of summer 2012
Jack's Magic Purple Stuff (20% solution)
Jack's Magic Pink Stuff (60% solution)
ProTeam Metal Magic (30% solution)
RamChem Ram Metal Hold ((60% solution? )
Kem-Tek 338-6 Metal & Calcium Eliminator (20% solution)
Haviland Stain & Scale Magic (30% solution? )Jacks Magic The Pink Stuff 1qt (60% HEDP) @ AmazonAnd YES, do a lime softening test. I just got feed back from "Old BAT" -- she completed the bucket test and went from CH > 300 ppm, to CH < 40ppm ! She has not done her pool yet, but that's exactly the sort of result we're hoping for. But, keep in mind that the bucket test requires you to vacuum sediment out of your pool. You can do this with a pole, a vac head and a vac hose, by setting up a siphon. But you'll need all those pieces.
20% KemTek HEDP @ Amazon
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