Recent content by Vandergraff

I used a skimmer sock recently and a pound was gone in a couple of hours

I am also leaving for 10 days later this month. My plan is to go to SLAM level on liquid chlorine and put some chlorine tabs in a floater. Hopefully this will keep chlorine at a reasonable level until we are back. Not sure what else I can do...I did this June when we were away for a week and it...

After testing with the CYA 50 ppm standard solution to check my ability to read the test I am pretty sure I am around 40 for CYA in the pool (testing with the standard solution and knowing the answer I would have been estimating somewhere between 40 - 60 for the standard solution). So I added...

Whenever I have tried to use that link I get an error message when I enter my ZIP or Address. Does it only work in certain areas? I wish I could get chlorine at close to $5 a gallon in Northern CA

On the Hanna website the user manual showing autocalibration. Kind of strange the Amazon description is different? I always use an Electrode Storage Solution between uses and find it keeps calibration very well (normally dead-on through the whole pool swimming season). Edit looks like from the...

Hmm... my Hanna meter also has autocalibration - single point at 7.00 or dual point at 7.00 and 4.00. Strange the Amazon description does say manual calibration and that is the one I bought? The third picture even shows the calibration mode with meter dipped in the reference solution.

Hanna Instruments HI98103 works well for me - seems to hold calibration well if you use an Electrode Storage Solution

Thanks everyone for the responses CH Levels in the pool always been within acceptable range when I tested. I haven't tested the fill water (but will) but I am assuming its not high based on the pool measurements I am using liquid chlorine currently As above pool CH levels seem fine - last...

I would love to get a SWG - but the reason it looks like it won't work for me tis that our fill water (from a well) has TA of 470. Pool school says for a SWG. It is almost impossible for me to keep TA 60 - 80. I can keep PH in 7.5 - 7.8 range by testing and adding muriatic acid but TA is...

But evaporation and then refill shouldn't affect CYA level though - right? When the water evaporates the CYA will stay in the remaining water (you are only loosing water to evaporation). When you refill you are just adding water. CYA didn't go anywhere. Now if you drain water - yes you are...

15 plus years ago my pool store recommended I treat for high phosphate levels however based on advice here I did not. The recommendations seems to be if you keep your pool properly chlorinated then it doesn't matter what the phosphate levels are. I am sure my phosphate levels remain high but I...

OK this did work - all 3lbs of CYA dissolved in the skimmer sock last night and testing CYA tonight read about 40 ppm and FC levels still good at the end of the day. Last few years have been in 40 - 60 ppm range (more likely 40 - 50 ppm) so I am wondering about the suggestion to get to 60 ppm...

Seems like this is going to work. 1lb had dissolved in the skimmer sock within a couple of hours. Added another 2lbs which should dissolve overnight. Will test CYA tomorrow evening to see where it is - and add more if needed.

Will try that - thanks. Yes it seems I can't unsee the black dot once I see it!

OK - it seems I am going to have to be careful adding the cyanuric acid to the pool as it is - well an acid... My solar panels have copper tubing - so I don't want low PH water running through them. For now I will try 1lb (probably about 1/3 of the first dose) of the powder in a skimmer sock...