I'm about to scream....so last night I must have been tired because after testing twice this morning I have:
6:15AM EST:
FC 12.5 / CC 0.5
CYA 45-50
pH 7.5
+2FC which makes no sense to me.
What I don't understand is I added sod-hypo before I left last night around 6:30PM. I had the filter on non-stop and took reading a little past midnight as per comment #15. I would think that would be more than enough time for the chlorine to mix to get an accurate reading. Right? I guess wrong since I'm +2 FC. And yes, I know how to test with the TF-100 (
it's not exactly hard). CYA is the same so that's not it. Argh.
I just added some acid to bring it back down to 7.2 (usually takes about a half hour).
Well, the algae is back and with a vengeance, I see it growing out of the lines now and I have now not a clue how this can be possible. Perhaps someone is coming late in the night and dumping highly active green algae spores in my pool. Or maybe it's ancient alients screwing (it's a family website) with me.
One thing, I can not SLAM all friggin summer, both due to the cost and the fact people want to swim in it. I'm at a loss now on what to do.
I am going to bring the pool up to shock, scrub the whole pool down and then figure what to do for the 20th. No one has this problem but me and everyone I talk to that has had some algae goes to the pool store and buys algeacide which is what I don't want to do. What I don't understand is how fast it comes back compared to other folks stories. What the heck am I dong wrong?