No more Algae!

RobHawaii

New member
Apr 1, 2025
3
Hilo Hawaii
Pool Size
6981
Surface
Vinyl
Chlorine
Liquid Chlorine
I'm excited to have found this forum with accurate information on pool care. In 2021 I purchased a Coleman above ground power steel pool 18x48 and within 6 months began having stubborn algae issues. I spent way too much time and money adding shock, that never really remedied the algae issue. I remember numerous mornings waking up and feeling discouraged that the pool had not cleared after adding shock the night before and running the filter all night. I then bought a chlorine generator hoping that would help. However, the salt only contributed to the rusting of the pool supports, and the pool has was sent to the dump last week.
This past week I purchased a new Intex Ultra XTR (18x52) and am in the process of filling it ( we have 10K gallon rainwater catchment and I fill the pool in stages so as not to use up our catchment tank water). I also ordered the TF 100 test kit and have a supply of liquid chlorine and will stock up on other required chemicals to correctly maintain the new pool.
I believe that my use of Pool Time chlorine tablets and shock contributed to ongoing High CYA levels and inconsisitent chlorine levels. Of course I was using test strips, so I had poor pool chemistry level data to follow. Secondly, I live in East Hawaii (Hawaii Island) with over 140 inches of rain annually. Overall, we tend to have rain overnight that can accumulate to be 1 inch or more with larger storm systems. Since there was so much water in a short period of time filling the pool from rainstorms, the chlorine levels were reduced and algae began to grow.
The pool location has no overhanging branches and receives full sun from 10 AM-2PM and then partial sun until 4 PM.
Thank you to everyone who has worked on creating and maintaining this awesome website! I promise to test and correct my pool water daily going forward and to follow the instructions on this site!
 
Thank you. I'll continue adding the pool and filter specs to my profile. However, I received my TF-100 test kit yesterday. It's a wonderful kit with very clear directions, and well worth the cost. I felt like I was back in my high school chemistry class.
Since I have never added CYA the reading was zero. I still performed the CYA test, holding the tube at waist level and looking down into the tube, while adding the sample water mixed as directed. If there is CYA in the sample, does the fluid become cloudier as it is added to the tube so that I can no longer see the black circle at the bottom?
 
If there is CYA in the sample, does the fluid become cloudier as it is added to the tube so that I can no longer see the black circle at the bottom?
Yes, see here: