I had some straight lines of black (what I assumed was black algae) along the natural stone at waterline. I acted quickly and should not have, (just joined this site) and put a whole bottle of Leslies Black Algae Killer in the pool. It was a proper dose. Before the dose of this, I have for the last year, (pool is only a year old) had a tough time keeping chlorine above .5. Many times 0, with my IC40. So a couple weeks ago added another IC40. Still, no 3ppm of chlorine! Only 2 on a good day.
A few days after seeing the black line, I dumped the black algae killer in afternoon, and then 3 bags of leslies powdered chlorine the next morning.-----
--- Now I have 3 new things. A chemical smell which I hate, slight foaming, and high chlorine. (7.5), that is not going down at all for the last 3 days, which is the complete opposite of what I have had since my pool was conceived. I have a 2.5yr old and I know he swallows water from time to time and I hate that, especially with that smell. (even though they say 15 mins after algecide is ok to swim) I recently opted out of the pool guy and am doing it myself now with TF-100
Any idea why my chlorine is hanging up high?
Here are today's numbers: