tingly water

[doriec]

A few nights ago, my husband and I noticed tingly skin while we swam. I had just checked the ph and it was 7.6. The next morning I noticed green algae in small clumps on the bottom of the pool. On the sides were sheets of clear, tiny bubbles that were slimy when I touched them. I shocked my pool today and am keeping the chlorine high. What caused the tingly skin? and what is the cause for the bubbles? My readings today are as follows:
FC 18.5
CC 0
PH 7.4
CH 250
CYA 70
Alk 140 a little high, I know, but I am working on it. The FC is holding.
I have an SWG and keep the FC at 4.5
Thanks, Dorie

[aylad]

The tingly skin was probably caused by the chloramines being formed when the chlorine combined with the impending algae. Don't kow about the bubbles...

Janet

[GraceByDesign]

Algea gives off oxygen, at least in ponds and fish tanks... figure it does in pools, too.

With a CYA of 70, your FC should be 5-10 and 20 to shock, according to the best guess table.

[medvampire]

Grace is right. Algea is a plant and it pulls CO2 out of the water and produces O2 as a by product of photosynthesis. The little bubbles are the O2. Algea in the oceans is a major player in the regeneration of O2 in our atmosphere.
Steve