"CL", if all you have there is cloudy/green water from algae, the proper amount of chlorine, applied consistently via the
SLAM Process, will work. Keep in mind that even If you exchange the water, it can revert back to cloudy/green if the levels are not not properly/consistently maintained. The weather is in your favor right now since our hot TX sun hasn't returned, but it will soon. So you can take advantage of the cooler weather and water temps for this SLAM. If you have doubts about the
SLAM Process, look back to the following to see if you did all you could:
- Is my CYA accurate (so you know what FC level to be at)? Tested outside on a sunny day, sun at back shoulders, etc)? If any doubt, let us know.
- Did I test the FC at least 3 times per day to ensure I was at the proper FC level as consistently as possible (in your case, a CYA rounded-up to 50 means an FC of 20)?
- Did I brush the pool at least 1-2 times per day?
- Did I remove any ladders, steps, or other potential hiding places that could hide algae?
- Have I been vacuuming to remove dead algae or anything else in the water?
- Am I backwashing when the filter PSI increase by 25% from the starting/clean pressure?
These are rhetorical questions of course, and only you know if they are all being met. But the
SLAM Process, when followed correctly, works. We just want to make sure you are giving it a chance. As Allen noted above, if you opt to drain, there will still be residual algae in the filter and lines, so a SLAM will still be required to finish it off. But the choice is yours. We'll be around if you have anymore questions.