My test kit arrived early I ordered extra so hopefully I should be good. My results are as follows:
pH 7.8
FC 17
CC 0
CH 200
TA 110
CYA 65
Entire bottom of the pool is green and puffs up green when you brush it. I have been adding the 1 gallon of bleach and brushing each night.
- Some ppl prefer to fill to a line, glance at the dot, fill to the next line, glance etcProper lighting is critical for the CYA test, so you want to test for CYA outside on a bright sunny day. Taylor recommends standing outside with your back to the sun and the view tube in the shade of your body. Use the mixing bottle to combine/gently mix the required amounts of pool water and R-0013 reagent, let sit for 30 seconds, then gently mix again. Then, while holding the skinny tube with the black dot at waist level, begin squirting the mixed solution into the skinny tube. Watch the black dot until it completely disappears. Once it disappears, record the CYA reading. After the first test, you can pour the mixed solution from the skinny view tube back to the mixing bottle, shake, and do the same test a second, third, or fourth time to instill consistency in your technique, become more comfortable with the testing, and validate the CYA reading.
Overnight test looks like it was successful. FC last night 40.5, FC this morning 40.5. Whatever is on the bottom is still there. Hard to see in pictures but does plume up when brushed. Only difference this morning from previous mornings this week was large clump in the middle of the shallow end. Overall pool looks much better (The large spot in one picture of the deep end is a rust stain from the pool light). I'm just a little nervous about bringing the chlorine back down.
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just to confirm- your SWG cell was off this night? If it was still adding FC then FC loss test is not valid- you're looking for pure loss when no additional chlorine was added.
Can you just vacuum whatever it is to waste?
Yes, SWG was off last night (One of the resistors on the main board is fried)
And yes, I can and will vacuum it to waste. My problem has been that it keeps coming back. I'm hoping that this is the last of it. If that is dead algae, why is it black or green? Always thought dead algae was a grayish color.
honestly- I don't know. OTOH if your tests are correct nothing would survive 40 ppm of FC, even in my original water with 300 CYA. Your loss at FC this high was 0 which is better than expected so try to vacuum it and I just hope this either was the last of dead stuff or something non- biological which fell off the water due to high FC. Is your filter internals in tip-top shape? No internal cracks, recently cleaned, etc? People add a little DE to the sand to improve fine particle filtration.
I hear ya. I really didn't think anything would survive. I got the TF-100 test kit so I'm pretty sure my tests are correct. My SWG is broken so I know that is not throwing things off and my readings were good before I started (I just had to adjust PH down) My wife just got some of what was in the picture in the clump and honestly it looks like it's alive when mixed up in the water. I plan on adding bleach to that sample to see what concentration kills it. Other than that, idk what to do.
As far as filter in good working order, sand is new this year, I checked all parts when I replaced the sand. I've done the deep clean. I've pulled the pool light and cleaned in there (I'm going to pull it again just to see)
I wish you lived closer - I have good binocular microscope we could use to take a look at that thing.
lol We actually have a scope at home too. My wife has been trying to identify it. So we decided to do a little science experiment. Took the sample of the algae that we pulled from the pool and put 1/2 teaspoon of pool water and algae into a container. Algae was green. Added 2 drops of the bleach we are using in the pool directly to the 1/2 teaspoon and waited. The green disappeared. So it definitely does appear to be alive and surviving 40+PPM FC. We are going to try to get a little more scientific than 1/2 ts and 2 drops of bleach and try to figure out what concentration we need in the pool to kill this stuff. I think at this point I'm on some kind of watch list with the amount of bleach we've been purchasing.