Recent content by Schorschi

Sorry, doesn't make sense to me. A higher CYA requires a higher FC level in a chlorine-sanitized pool. Why does this rule not seem to apply to an SWG-sanitized pool to the same extent as with a chlorine-sanitized pool? If semi-continuous (ie. only when pump runs) chlorine injection were the...

LOL. Nah, I think you're good. I'm much geekier. I not only put my numbers into a spreadsheet, but I make a chart too. P.S.: If someone could tell me how to attach images that are actually legible (without having to host them elsewhere), I'd be ever so grateful. P.P.S.: Hey, just realized...

Thanks everyone for your answers and tips. @jblizzle. Right. I did not SLAM my pool when opening in February. Is there reason not to believe in an algaecide product to do its job, though? So, is it possible that since February I've had something in my pool that causes algae to grow, even...

I let my pool get green over winter. Bought some magic Algaecide potion from the pool store, additionally applied some 1-2 lbs of powder shock at the time and within a day or two all green was gone and had turned into gray matter. Cleaned filter, backwashed a few times and all was good. That was...

With the CYA test in the TF-100 test kit it helps to save on reagent if you know your result to be 50 ppm or above and reduce your sample and reagent amounts accordingly (and proportionally). For instance, 15 ml will fill the test tube just above the 50 ppm mark, so you need 7.5 ml of pool...

I got 20 lbs for $40 on ebay from backyardpoolsuperstore a couple of weeks ago. Free shipping. Best price I could find. They have a web site too that charges the same price, but adds shipping cost.

At Leslie's, Brandon, FL: $4.50 for 2.5 gal jug. $3.99 special every so often. 10.5%. So, that's equivalent to $1.80 ($1.60)/gal.

Yes, I've had my problems with that. Placed a tube sock with 2 lbs of CYA in my second skimmer, but there is hardly any suction in it. Even after 10 days, the CYA granules have not disappeared from the sock. So, CYA dissolution has been practically non-existent. I am aiming for 50 ppm CYA. Only...

So, it appears I have a leak in my pool. I never did the bucket test. I am estimating I have a loss of about 1,000 gal of water per week. I've been a pool owner for a little over a year. The previous owner installed an autofill device. My TA, CH, pH values appear to be exceptionally stable...

I guess I'm just having a very hard time accepting an error of ±15 ppm. And I don't understand that it's not possible to create a test with higher consistency. Must have to do with my background in computing where digital results prevail. Non-deterministic machines are a programmer's...

I'm not sure what you mean by "absolute precision". Can one not expect consistent test results between samples of the same reagent of different lots (and probably ages) taken at the same time and hence identical lighting conditions? As I mentioned above, the difference was so significant that...

I'm actually using a syringe to add pool water (and a different one for reagent) to the mixing bottle. So, I'm pretty certain the ratio between the two is equal. In this case I did them right after one another between the two reagents. So, I had exactly the same lighting conditions. The test...

I'm storing the test kit indoors (~78°F) on top of a living room cabinet and take it to the outside patio for testing. Currently, the patio is about the same temperature as indoors when I test, but in summer it's 90°F. So, yeah, I've been thinking about doing the test indoors.