I'd started this a few minutes ago, but something went wrong!

I've got green water. While searching the net for help, and after enriching my local pool store, I found you guys. Why should the pool care whether the hypochlorite ion is attached to a sodium ion or a calcium ion? Inquiring minds want to know.

A few details:

25,000 in ground, vinyl
SWG
Sand dollar 60 filter, new sand, Challenger 1 hp pump

Pool shop test results:
Saturation index -.8
TDS 4500
CYA 90
Tot Cl 1
Free Cl 0
pH 7.8
Tot alk 50
Adj tot alk 23
Tot hard 75
Salt 3100

So far the store has had me using A LOT of 48% cal, and most recently something called Swamp Treat (no ingredient statement either on jar or website) and a good deal of trichlor, probably the major source of the cyanuric acid.

The only removal of green has been from my wallet!

Monday they did a 4 hour test of a sample, I guess to measure chlorine demand.
After that test their recommendation is 28 lbs of 48% cal, broken into 3 doses 3 or 4 hours apart, 10lbs, 10lbs, and then 8lbs, dissolved in water before adding to the lime jello pool. This would be around $100.

Working with that 28 lb figure and The Pool Calculator it looks as though 36 or 37 96 oz jugs of 6% bleach might do the job. Does this seem about right? Should I follow their schedule of application for the bleach, 12 gal every 3 or 4 hours, with frantic brushing, of course?

When I told the pool store that I was investigating household bleach they were incredulous, to put it mildly. But with a vinyl liner I don't need calcium ions, they'll only gunk up the SWG.

I'm really glad I found this site! One not to be named pool store person recommended copper algaecide even though I told them that I though the copper would plate out on the salt cell. Geez!

Any help, advice, hand holding y'all can give would be much appreciated!! Thanks!