Newbie w/ very GREEN pool - HELP!!!

[Watermom]

If you maintain the shock level as it seems you are, you should start to see improvement within a couple of days. Run the pump 24/7 and watch your filter pressure. When it rises 8-10psi over your clean filter pressure, backwash.

[gettinthesplash]

3 days now with my FC at 25 ppm or higher and no significant change. The green may have paled. CYA still at 100. A little more patience and persistence? or is water change a must? If I get a chance I'll post pics tomorrow. I haven't done a backwash yet. The pressure only went up about 5, but thinking maybe it would be good to go ahead and do a backwash. Have swept/broomed the pool everyday. Yesterday just left the "lil shark" work, maybe that's not as good? It has been raining off and on too. Is that setting me back?

[Watermom]

If it was my pool, I'd do a partial drain and refill and get the cya down. Who knows how high it really is since no cya test can distinguish higher than 100. It may take a couple of partial drains / refills which will be a pain but it will be SO much easier to maintain a lower cya pool.

[aylad]

Is your water green and cloudy, or is it green and clear?

Janet

[gettinthesplash]

Janet,
It's green and cloudy

[dmanb2b]

As I stated a few days ago, trying to shock your pool with CYA at 100 is very difficult. You can try to keep at it by raising your FC level further to let's say 35ppm and holding it there or I would strongly encourage a 50% drain and fill to get the CYA down.

[BigDave]

I agree with dmanb2b, your CYA may be well above 100, can you try diluting your pool water 1 to 1 with distilled (maybe even tap) and test the dilute sample for CYA, if it's still 100, dilute 2 to 1 etc. until you get a reading within the range of the test. The accuracy of this testing will be lower but you'll have a target for the partial drain / refill you'll need. There are some postings on this forum that describe using a plastic membrane to fill while draining without risking the integrity of your pool or wasting fill water.