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  1. Yorkiegirl

    Can this be black algae?

    I have a 35,000 gallon inground SWG vinyl liner pool. Pool chemistry is in line. This afternoon the FC was 7.8 and the CC was zero. PH was 7.4. I use a Taylor 2006 test kit. This evening I noticed black in the crevice around my steps. I used a brush and it peeled out rubbery black strips. It...
  2. Yorkiegirl

    Trouble with Dolphin Deluxe 4

    We bought a house last fall that came with a pool. We have a Maytronix Deluxe 4 robot. It’s worked fine up till now. One time the track slipped off the roller but that was an easy fix. We put it in the pool yesterday and it won’t move. It also seems to want to float. I checked the rollers and...