Mainly because its not dying. Its still green and multiplying. We bumped it up and its still living. I would put money on the fact that if we dropped the chlorine down to normal levels for a swg pool it will be back in a week.
By chance, is your bleach old? Have you checked the date on the bottles?
Being a bit harsh, your algae and your pool are no different than anyone else's algae and pool. I am sorry that what works for thousands of pools across the country does not work for yours. Everyone is free to manage their pools as they see fit and we actually encourage folks to learn what works and do just that.
Let us know if you find a combination that works for you.
I've been following this tread and I wanted to know why not use an algaecide, since this is such a stubborn problem?
I had a similar problem last year and a $30 bottle took care of it!
Crystal clear water and no algae since last September.
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So I have a few thoughts. Since you are measuring a FC of 40, your chlorine is fine. I hate to disagree with the folks here, but that really looks like pollen to me. It's the same color as I get when the dang Crepe Myrtles pop flowers. I would really suggest you pick up some pool DE and add it as instructed in the previous posts. They make skimmer socks that work good for small stuff or you could try putting an old tee shirt in the skimmer basket. Just be careful to check that it doesn't get too full of gunk.
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And let your FC drop a little back down to the proper SLaM level for your CYA. No use in keeping it that high for so long.
if you're not losing fc in oclt then it can't be algae. if you think it dies when you put it in a dish with bleach, that would mean oclt would be targeting it also and it would drop fc.
IMO algaecides mask the actual problem which is unsanitary water. I'd prefer visible algae in the pool knowing it is more tolerant to chlorine than bacteria/viruses than 'clear' algae- free water that contains everything else. Besides algaecides bring copper in the water which is very hard to get rid of.
So is it or is it not possible to pass the OCLT with Mustard Algae? I thought I read on the forum that you could pass the OCLT and still have Mustard Algae, but based on some of the responses it seems like some are saying it couldn't be any type of algae and still pass the OCLT. In this particular case it doesn't sound like Mustard Algae because of his higher FC levels and it is still not going away.
Have been at SLAM levels for a week straight and saw some difference in algae but it seemed to adjust to the levels somehow and then came back. Have been very diligent with it, bleaching toys, removing steps, brushing twice a day but have had it about 5 years now if that makes a difference. What honestly worked for me was once I was at mustard shock level, and passed the OCLT test and started letting the FC drop again, once I noticed it was still there, I hit it with a copper algaecide. Again, against the grain here, but it worked. I have not seen it back yet. Using a Taylor K-2006 kit and was religiously testing my water including getting the CYA number and SLAM values correct.
17,200 in ground pool, DE filter,3/4 hp pump, solar heater, SWG (Hayward Salt and Swim 3C). 1988 Hot Springs Highlife-K Hot Tub (415 gal.)
So is it or is it not possible to pass the OCLT with Mustard Algae? I thought I read on the forum that you could pass the OCLT and still have Mustard Algae, but based on some of the responses it seems like some are saying it couldn't be any type of algae and still pass the OCLT. In this particular case it doesn't sound like Mustard Algae because of his higher FC levels and it is still not going away.
Mainly because its not dying. Its still green and multiplying. We bumped it up and its still living. I would put money on the fact that if we dropped the chlorine down to normal levels for a swg pool it will be back in a week. I'd love to be wrong and I'd be happy to be wrong.
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By chance, is your bleach old? Have you checked the date on the bottles?
Sorry everyone, been traveling with very limited access to a computer. I'm catching up on everything everyone has posted. Someone has been staying at my house and continuing the treatment while I was away. My current situation is this...FC is currently 15. I continued with the SLAM process for 7-8 days with FC anywhere from 26-40. I went out tonight, brushed the pool and all sidewalls and floor is coated, water is crystal clear. MY SWG is running again and seems to be working. The sample of whatever it is, does react to bleach of varying quantities. But like I said, traveling so didn't have much time to test what level actually seems to kill it. There's plenty more in the pool now so I can continue testing.
I have passed mine numerous times with the mustard algae in there. Only time I see the chlorine drop at all is when using an algaecide that is killing it. I have tried the SLAM method with no dent in the algae whatsoever. It is very resistant to chlorine. Only time I have seen any difference at all is when using copper algaecide which goes against the grain here and then my pressure jumps and the chlorine drops and it DIES.
17,200 in ground pool, DE filter,3/4 hp pump, solar heater, SWG (Hayward Salt and Swim 3C). 1988 Hot Springs Highlife-K Hot Tub (415 gal.)
Did it start growing in that jar next to the pool? I understand the point of that experiment was to see if it's alive or not, not to kill it outright.