Been following TFP/poolforum.com for the last year with generally good results. Opened the pool late this year (2 weeks ago). Had some leaves on the bottom, a green-ish hue but clear water. We vacuumed the bottom, added several gallons of chlorine and some small tablets to the skimmer, fired up the pump/filter, and haven't been able to get it to clear.
33' round above ground with liner. ~25k gallons.
Have a Taylor K-2006 kit:
A couple oddities:
The return nozzle came off over the winter and fell into the pool. Can't see the bottom right now to fish it out, so I just installed a new one today. Aimed it up to aerate, hoping this helps bring the Ph up since the TA seems to be plenty high.
I just added 4 lbs. of CYA. It measured less than 20 when we opened. I added it to the water instead of the skimmer because we have been back-washing regularly. That's why I'm estimating 20-30 ppm right now, I'll test it again in a few days.
I had trouble last year and this year both with green stuff occasionally coming out of the return jet when vacuuming so I was suspicious of the sand filter. I dumped the old sand, took the legs apart and cleaned it out really well, didn't find any cracks. Replaced it with the required 200 lbs. of pool sand from the local pool store. New sand seems finer than what was in it before which seemed like a step in the right direction, but I've still seen the green stuff shoot in during vacuuming. Back-wash then and it seems to be OK again.
CH is very low, does that matter at all with a vinyl pool?
Should I try a SLAM?? CC is 0 which surprised me. Spiked the chlorine to 10 this past weekend but it has drifted back down to 5 today. Still cloudy blue water.