- Jul 29, 2018
- 785
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I have a laminated instruction card that came with my TF-100 kit. Now I'm see contradictory information. Two items, plus a small clarification.
* Calcium Hardness. Instructions on my laminated card say use a 10ml sample and that a result of 250-400ppm is ideal. Now I've read on this forum that new recommendations are 350-500ppm. That's quite a difference, especially if you were normally near the low end of the ideal range. At tftestkits.net I still see 250-400ppm as ideal. Also I'm reading on the forums that I should do this test with 25ml of pool water and correspondingly different numbers of reagent drops.
* Total Alkalinity. Instruction sheet says 60-90 for salt pools and 100-120 for manually chlorinated pools. Now looking at instructions at the tftestkits.net website, I see "70-120 generally works well" with none of the original salt pool and manually chlorinated pool reference. And I'm also seeing recommendations in the forums of TA of 50-60 to control pH rise.
Another minor point. Taylor specifies for the drop test either two level scoops or a heaping scoop. Responding to an inquiry here a couple weeks ago about inconsistent results from the drop test, I did my own semi-scientific testing and found that if I didn't use "plenty" of powder, I could get a false low reading. I use the SpeedStir mixing device--which I highly recommend! In the end, I reached the conclusion that if I had some undissolved powder after thorough mixing, I could count on consistent results. Too much powder wastes powder but does not adversely affect the outcome. Too little OTOH could give a false low result. FWIW.
* Calcium Hardness. Instructions on my laminated card say use a 10ml sample and that a result of 250-400ppm is ideal. Now I've read on this forum that new recommendations are 350-500ppm. That's quite a difference, especially if you were normally near the low end of the ideal range. At tftestkits.net I still see 250-400ppm as ideal. Also I'm reading on the forums that I should do this test with 25ml of pool water and correspondingly different numbers of reagent drops.
* Total Alkalinity. Instruction sheet says 60-90 for salt pools and 100-120 for manually chlorinated pools. Now looking at instructions at the tftestkits.net website, I see "70-120 generally works well" with none of the original salt pool and manually chlorinated pool reference. And I'm also seeing recommendations in the forums of TA of 50-60 to control pH rise.
Another minor point. Taylor specifies for the drop test either two level scoops or a heaping scoop. Responding to an inquiry here a couple weeks ago about inconsistent results from the drop test, I did my own semi-scientific testing and found that if I didn't use "plenty" of powder, I could get a false low reading. I use the SpeedStir mixing device--which I highly recommend! In the end, I reached the conclusion that if I had some undissolved powder after thorough mixing, I could count on consistent results. Too much powder wastes powder but does not adversely affect the outcome. Too little OTOH could give a false low result. FWIW.
