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Ahh. That would jive with "why this year?". Thanks, Ken

My pool steps had become discolored (dingy gray hue) over the course of this summer. Vitamin C has successfully (like magic) treated the discoloration. Looks great. Thank you! I am trying to understand the root cause of the discoloration. The discoloration began to appear about mid August. Any...

Thanks for the PoolMath range explanation. Makes sense now.

First, I must say I love this website. I recently switched to liquid chlorine and have been testing my water with TF-100 daily. I think I have it under control and the knowledge gained is empowering. Question: My CYA is ~75 ( I pumped out about 10,000 gallons of water and refilled to get to...

For the past 20 years, I have used the 3" stabilized pucks. My CYA is around 180. I know, way too high. I am switching to liquid chlorine using a peristaltic pump (not hooked up yet). Question: To get to a CYA level of ~60 ppm, my understanding is I need to empty ~2/3 of the pool water and...

I am new this year to the TF100 test kit. I tried for the first time using the Standard bottles. Some of my readings were slightly off. Calcium Hardness: I measured 300 ppm while the Standard is 200 ppm Total Alkalinity: I measured 130 ppm while the standard is 100 ppm. Are these measurements...

@Mdragger88 Thanks for your comments and tips. Using the tabs for vacation sound like a good idea.

@BowserB Thanks for you comments. I like your suggestion about "no-descriptive" titles. I tend to like to do it myself as well. I am going to buy the TF-100 test kit. Glad to hear the CYA drops over the winter. I was hoping that was the case since mine is quite high (102). Ken

@meestahmarc Sounds reasonable, thanks.

@PoolStored I agree. I know I have that in my future.

@V___25 I have not yet closed my pool. I understand "changing" some of the water is in my future but I am okay with that.

I have a few comments/questions please. Background: I have used 3" slow tab chlorine in my pool for 30 years Often at the end of the season, I have a green algae problem This year the good folks on this forum have helped me identify what is probably going on. Last (Sept 3, 2021) water test...

@HermanTX @reggiehammond @mknauss Thanks for your suggestions. Will order the TF-100 Pro (SpeedStir) with XL option. Look out algae!

I am about to buy the TF-100 test kit and was hoping a pool owner could suggest the accessories that they find helpful with the TF-100. The one I see that looks helpful is the SpeedStir. Could anyone suggest any other accessores? - thanks, Ken