I had to drain my pool this past Monday so the PB could fix a spot under the liner where, apparently, something just behind the dig-out had started to cave in. Some bad fill from the original development perhaps. Regardless, I got a brand-new 19k gallons of water trucked in on Tuesday. I started a short SLAM to make sure everything was good but two nights in a row I failed the OCLT with a 1.5 ppm drop in FC which is close but no banana. Hoping tonight is the charm.
Anyway, while reading the forum to make myself feel better by reading about how other people have the same "almost there, just keep swimming" problems, I noticed that almost everyone suggests scrubbing out behind the light niche. I figured it wouldn't hurt so I'll do that later today, but I got to wondering... doesn't algae need sunlight to grow? And, isn't it pitch black in a light niche assuming you actually have a light installed?
So my question... has anyone actually ever had algae growing in their light niche?
Anyway, while reading the forum to make myself feel better by reading about how other people have the same "almost there, just keep swimming" problems, I noticed that almost everyone suggests scrubbing out behind the light niche. I figured it wouldn't hurt so I'll do that later today, but I got to wondering... doesn't algae need sunlight to grow? And, isn't it pitch black in a light niche assuming you actually have a light installed?
So my question... has anyone actually ever had algae growing in their light niche?