Recently, I have been dealing with an abundant amount of algae growth in my fresh water pool. I maintain a chlorine level of 5.5ppm possibly higher. I have also noticed that the CYA levels have peaked to 100ppm no thanks to the 3" tri-chlor pucks that I have been using. So, I have been doing some research I have come across the only way to reduce it without seriously screwing up the other chemistry of the pool is to drain it a few feet and refill it.
The PH as well as all the other chemicals test in a very good range except for the CYA. I have a Taylor 2006 test kit that I use regularly. Now, I have come across several online opinions as to what is too high of a CYA reading. Some suggest that 100ppm is not too high. Well, tell that to the algae growing on the floor of my seriously chlorinated pool that I have to scrub every other day.
So yesterday, I went ahead and dropped the water level 1-1/5' and refilled it. It basically took 5-6 hours, which dropped the CYA from 100ppm to 70ppm. With fall coming up, I will need to drain it again. So I will repeat the process next spring.
I'm hoping to be around 30-50ppm by next year.
What a hassel this is! Why are there not more people dealing with this problem? Am I the only one using a automatic feeder with the 3" Tri-chlor tablets? I use the recommended amount and set the feeder to 3.5. I think I understand why the CYA is rising, but the way I see it, the only way to stop it from getting higher is to stop putting it in the water via the 3" tablets.
This is only my second year with this new pool.
At this point, I have switched to liquid bleach and shock if needed. Even more frustrating is I have a really nice clear inline Rainbow feeder that I can't use anymore.
Is anyone else experiencing this problem?
Maybe, it is due to the lack of rain in our area. We are in a drought as is half the nation.
I will retest today to see if the level has maintained or if it has gone back up again.
I'm Really frustrated because I have a 50lb pail of unopened 3" tablets that I can not use.
Also, since I have made the investment with the feeder, are there any non-stabilized 3" or 1" tablets I can use in place of the tri-chlor?
I noticed the previous thread about the weed and feed and have commented on the thread about the fertilizer & CYA.
Any comments would be appreciated.