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Sorry, TF-100 is what I'm using. Sent from my iPhone using Tapatalk

Thanks @kimkats, @Patrick_B. Below are the readings as of this morning (along with annotations of last nights reading). Pool looks crystal clear by the way, so the super shock seems to have slayed the algae. I was also surprised why my CH and TA readings are so different this morning compared...

TL;DR: Pool green on return from vacay, managed to get FC very high by mistake, CYA very low, what to do? So I returned from a 12-day vacay to a green pool. Prior to leaving, I cleaned and brushed the pool, emptied out the skimmers and the pool vac bag, and raised FC to shock levels (24ppm for...

Thanks for the reassurances! Lesson learned on keeping tabs on chlorine levels and pH everyday, and CYA (and others) weekly. Sent from my iPhone using Tapatalk

Happy to report that my SLAM was successful based on the OCLT. FC loss was only 1ppm (24 --> 23), and CC was 0.5. Interestingly, chlorine loss during the day was higher than expected, went from 20+ down to 13 in one day! BTW how long should one wait before measuring FC after adding chlorine to...

[emoji106] Sent from my iPhone using Tapatalk

OK, thanks for that tip. I usually adjust down to 7.2 because it tends to drift up quickly. Would that be OK or did you mean 7.4 or so? Thanks again! Sent from my iPhone using Tapatalk

Hey neighbor, thanks for that tip. Will start an OCLT at SLAM levels tonight and see what news it brings tomorrow. [emoji3] Sent from my iPhone using Tapatalk

Thanks for the reply, PAgirl. My latest results from yesterday night (Wednesday 11pm CST) are: pH: 7.5 CYA: 60 FC: 8 (was 4.5 before I added a gal of 10%LC) CC: 0 TA: 60 CH: 425 Will test pH, FC, and CC once I get home today and post results. Sent from my iPhone using Tapatalk

So I've been using TFPC method for a couple of months now with great results. In the recent week, I've seen that although I've been maintaining FC, I'm seeing hints of algae growth. I've been able to brush the algae away and the problem seems to stay at bay for a day or two before I need to...

Thanks for all the insights. The multi port is actually pretty new, so it is unlikely to be the problem. The sight glass has been full of water as long as I remember. Is that a big "no no"? Thanks! Sent from my iPhone using Tapatalk

Hello all! So I am a recent convert to the TFP method and needed your help diagnosing some peculiar behavior I'm seeing with my DE filter (Pentair Nautilus FNS 60). Whenever I charge fresh DE after a backwash, I get some DE in my pool returns for a few days. I usually vacuum it up over a few...

Ok, thanks! Sent from my iPhone using Tapatalk

I just got one and found out my measurements with manual swirling were a good bit higher. Sent from my iPhone using Tapatalk

My new SpeedStir indicated that my TA was actually 60 and not the 80 that I was getting previously. The TFP Pool School recommends TA of 70-90+ for plaster pools, while the TF-100 test kit suggests 100-120. Which of these ranges is correct? Sent from my iPhone using Tapatalk

Thanks for the input! Sent from my iPhone using Tapatalk

Thanks all! Sent from my iPhone using Tapatalk

Today I happened to inspect the pool right after the pump stopped running, and saw a fog of DE at the mouth of both skimmers and the main drain. For some reason when the pump stops, DE leaks back into the pool as if it is present in the lines leading to the pump. The pump is not losing prime...

I understand the TF-100 CYA test is a bit subjective, but anyone have tips to get reliable results? I, for one, tend to see a faint black dot for quite a while and wonder if I'm going way past and registering low CYA readings as a result. Second, I'm not sure about the protocol for shaking the...

So I got my new SpeedStir and found out my TA is actually 50 and not the 70+ I've been measuring manually [emoji19]. Where do you typically get your baking soda? Sent from my iPhone using Tapatalk

Wwells: With the caveat that I'm a rookie, I'd say adding enough bleach should do the trick. As for the skimmer, I emptied mine and left it on. Clogging is a potential risk but as long as there's flow through the pump (via the main drain) it seems like a risk worth taking. Turning it off may...

Happy to report that the pool is looking fantastic upon my return. FC was 15ppm, pH 7.4. Raising the water level, lowering pH to 7.2, shocking and adding trichlor pucks seem to have done the trick! CYA went up a bit as expected, it's now 70ppm. I plan to lower that in coming days. Sent from...

Thanks for the input. Will plan to inspect the grids during the next backwash. Sent from my iPhone using Tapatalk

So I backwashed and recharged My filter with DE via the near skimmer yesterday. A couple of hours later, I drained the surface water to waste for a couple of minutes to lower CYA, and then switched the multiport back to the filter setting. As soon as I did that, I saw a puff of DE entering the...

Thanks for the heads up, I'm gone for 5 days but that comes out to 6ppm and not 8 as I had calculated. Sent from my iPhone using Tapatalk

Haha Lisa, I've only been at it for a month or so using TFPC and my family already thinks I'm nuts. I have been scrubbing the pool a lot though to stay one step ahead of yellow algae. Husky25: thanks for the tip on placement of the float and the CYA. Mine is around 60, so I don't have much...

JVTrain, to answer your question on the chlorine loss, it's about 25% per day. So I'm estimating I'll be at 8 ppm when I return if I raise to 25 ppm before leaving and don't use pucks. Will add water to pool and plan to use pucks as suggested by Richard, and lower pH per Lisa as it tends to...

Thanks for the reply! Is there a cheap and easy way to cover a pool? If not, I'll take up your idea of shocking and adding pucks, I have a bunch of those leftover from my switch to TFPC [emoji4] Sent from my iPhone using Tapatalk

Hi All - I'm a recent TFP convert and just SLAM'd my pool followed by treatment for mustard algae and its looking great. Will be headed out of town for 5 days. What's the best strategy to treat the pool to see me through the trip? My instinct is to boost the chlorine to shock level (25 ppm based...