another black algea problem

[PoleSlinger]

Kingcoota, In the past, I've had terrible black algae problems in pools with less than perfect surfaces. The black algae seems to "root", hide in pits, pockets and crevices. Brushing removes the black algae head but doesn't seem to destroy the "root". After brushing vigorously, try broadcasting trichlor granules over affected areas. It's worked for me.

[CarlD]

What is your FC level? If you are not keeping it at 15ppm round the clock you won't get rid of the algae.

[Poconos]

I frequently get light algae on some of the walls and nooks and crannies when I neglect the pool for any period of time. Brushing those areas is tough. I rig the vacuum hose and brush to one of the return jets so it blows. Makes it easy knock stuff loose. Typical return jets are 1.5" threads so just get a 1.5 inch male PVC pipe adapter and cement a short piece of 1.5" pipe in it. The vacuum hose end that hooks to the skimmer will fit inside the pipe. Also get 1.5 inch threaded pipe plugs for the extra return jets. Take out the eyeball, screw this thing in and go. Once the algae is in suspension the chlorine can do its job easier. Never had to deal with black algae but this may help.
Al

[kingcoota]

my fc level has to be high not sure exactly how high though

when I test my chlorine I only have a leslie cheap o test kit but it turns dark orange so I'm guessing at least 15 ppm. The black algea is gone it's just the roots that I cant get inbedded in the concrete.

I'm getting a barrel of 15% sodium hypo wednesday from a friend at a plant near my house, that they use for treating drinking water. I'll try again next weekend.

Chlorox is getting high around here it's 4.30 for a 196oz of ultra at home depot and lowes and about 20 cents cheaper at walmart. I found some 3% value time bleach at local market for 1.50 for the 1.96 oz.

I think I dumped 18 196oz bottles of chlorox ultra and three one pound packs of hth super shock in my pool from friday to sunday it made a expensive weekend.

[Poconos]

Wow...$4.30? Last I bought at the Malwart around here was $2.54 for 174 Oz, 6%. That's in Northeast PA.
Al

[CarlD]

Be careful! The Chlorox sold at my local Home Depot isn't appropriate for pool use as it has other ingredients besides simply Sodium Hypo and salt-water. I NEVER buy it there for that reason.

[kingcoota]

http://cloroxprofessional.com/products/ucg_bleach.shtml

This is the bleach homedepot sells

walmart only sells regular chlorox thats almost the same price.