my pool, I love it, it's beautiful, like diamonds, but this is the first year I have had issues with the golden bloom ring of dread. I test daily with no fluctuations, but I can't seem to figure out how this happens. I use the Taylor k-2006, test for ph/chlorine daily and alkalinity every 4-5 days and calcium and Cy monthly: my results today (and for the last 5 days with no chem adjustments with exception of adding 1 chlorine tab every other day):
FC - 3.5
CC - 0
TA - 90
CH - 240
CYA - 40
Langelier Index - +.10
(water temp 90/outside temp +98, last 5 days, too - live in Houston TX)
Side note: drained and refilled 1/2 of pool 2 weeks ago due to +120 Cy.
Remember: took it down to the concrete, plain white re-plaster job last October 2012
Then today, the start of the ring, I know hot weather and oxidation play into this, but I can't seem to wrap my head around how to get a handle on this and figure this in as a regular routine - do I test for it? can I anticipate it? I'm tired of brushing and duping chlorine in when the CC is 0, so how do I foresee this and kill it before it comes? and is chlorine free shock an option?