Just what IS that black film clinging to the inside of my skimmer?

[fcfrey]

I don't know if you are using BBB or pucks but here is a testimonial ---- Prior to going BBB we had the black oily deposit inside the skimmer and also on the steps. The better half scrubbed the waterline weekly and did the skimmers and steps every day. The pool stores said it was pollution and lotion etc. and then proceeded to sell us stuff to clean the gunk off.

We switched to BBB last year after 4 years of the pool store nonsense. We lost the bathtub ring almost immediately. This spring I used 12 pucks to raise the CYA a bit and guess what, ------ the black gunk came back within a few days.

The CYA is now up where I want it, the pucks are gone and we're back to bleach ONLY. NO MORE BLACK GREASY GUNK!!!

Anybody want a half bucket of pucks cheap, send me a PM.

[SLS]

I keep a puck in my skimmer at all times and use bleach to "adjust" the level. I always have the black goo in my skimmer which I too believe is the puck. I haven't noticed it anywhere else.

[subedoo]

I don't know if you are using BBB or pucks but here is a testimonial . . .

I have used BBB since the pool was installed late last season. My pool has not seen a puck. I keep my chlorine on the "high side" of the recommended level (at 6 or 7) with my CYA at 35~40.