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hello all - my chlorine will not last in my pool. My #'s are as follows: CYA= 35 CC=0 CH= 330 TA=90 PH=7.3 I have plenty of CYA and it hasn't been hot here. Don't know what to think..... Any help will be appreciated. Thank you chlorine is zero. I added chlorine last night

What causes TA to rise? Fill water is 30. My PH from fill water is approximately 8.0 to 8.5. Thanks in advance. I get TA down to 70, but keeps rising.

It's warmer now and I'm having to replace water that is evaporating. My PH is uncontrollable along with TA. I tested my fill water twice in the last two days and I'm sure this is the problem. See attached pic. I can understand why the PH in the pool would be going up, but not sure why TA...

I am using the PoolMath calculator and am not sure of the exact amount of Clorox concentrated bleach to add. Example: when using the calculator it says to add 121 oz of 8.25% strength. My question is should I add 121 oz of concentrated? Is the concentrated the equivalent of 182 oz? or some...

I have a TF-100 test kit and the instructions says to fill clear plastic cylinder to 10 ml mark. I previously printed out a pdf file forum and says to fill to 25 ml mark (10 ml) The open and close paren use for very high CH. My CH is ~ 280. Should I fill to 10 or 25 ml mark? I must be...

Here is a picture of my Aerator. I think it is okay. Read a post from 2008 ish which gave instructions on how to build as I don't have a waterfall, etc. I drilled four holes in the cap. My question is should water be coming out from this? I was thinking it would just be air.

Hello All - not sure where to post my question. I'm trying to aerate my pool, just raise PH. I'd like to input PVC pipe in my return thread. My problem is I can't twist off a unnecessary part as I think it is glued. I believe I have a 1.5" or 2.0" female thread that screws into a return. I...

My PH has been rising for the past six months and I can't determine why. Get's up to 8.2 and I add acid and goes to 7.7 For the past 3 years has held steady at 7.8 test results have been as follows: fc: 10 cc: 0 ta 100 ch 320 cya 70 ph 7.7 - 8.2 any help appreciated. TJ

Last summer we were fighting green algae all summer long, mainly by brushing the pool. CYA was at 125, tested by pool store. End of summer we located forum and purchased tf-100 test kit. Have lowered CYA to 70 and hope to lower to 50 by the end of rainy season (April 1) My question is should...

I received my tf-100 test kit. high CYA and CH. CYA matched pool store. CH at store has always been 250 for last 5 years. I tested for the last 3 days and has always tested at ~ 500. Hard to believe the ppm is that much of a difference. Also am curious why the store has consistently gave me...

To Forum: is there any difference between liquid concentrated bleach and concentrated germicidal bleach? The liquid bleach is a tiny bit cheaper. I assume both have strengths of 8.25%. Web site does not specify strength. They say 121 oz of concentrated is equivalent to 182 oz of un...

Brought CYA down to 90 from 125 :) I'm planning on bring down to 40 during our rainy season, then proceed to SLAM. My question is; any harm using Fresh and Clear during interim period? I purchased recently :( and hate not to use unless it brings up my CYA or any other side effects...

Measured my CYA and others, except free chlorine. r-0870 spilled during shipment:-( Cya was actually the same from the pool store, 125. Draining and replacing 1/3rd at a time. Now, January, and March. Hope will reach good level after 3rd round. TJ

I just received my tf-100 test kit. Opened up and something spilled during shopping. I think it might be r-0870 powder? can the forum assist? thanks in advance - - - Updated - - - meant during shipping

Hi Forum - basic question for all. Where should I add liquid chlorine %8.25? Empty 121 oz through skimmer, deep end, or shallow? Thanks in advance

I don't know if this mustard algae or pollen. I just see this yellowish film floating on the surface. See attached pic. Thanks to the board in advance. TJ - - - Updated - - - I receive my tf-100 test kit on Monday, will post results. Meant to ask the board if they have any thoughts if...

from reading a few threads I believe the #1 test is the CYA. From what I've discerned the CYA/FC ratio is of utmost importance. Well maybe just in my case. If my CYA is say 135, I believe I need to lower this first. I do not have any visible algae now, but it was visible in the warmer months...

I have 3" pucks where Trichloro -s-triazinntrione is the active ingredient 94.05% Also been using Sodium Dichloro-s-triazinetrione-Dihydrate is the active ingredient 99% The latter is the granular chlorine I have been using. I believe the 3" pucks have been increasing the pools CYA. Is the...

New to forum, have been browsing for about a month. I have been working hard on walls this summer:( Way too much algae. I believe it is because my CYA has increased to 125 from 100. I believe the only way I can lower the CYA is partially drain the pool and add water. I plan on doing this in...