Forum: Dealing with Alkalinity and Calcium

I've added very small amounts of muriatic acid to my 500 gal hot tub to lower it's alkalinity. I've been successful with the blowers running in...

I have a 25,000 gallon gunite pool. Based on my first real test results (FC 3.6, CC 0.2, Ph 7.2, CYA 50-60, Calcium 140, TA 80) and advice from the...

How high is too high for a vinyl pool and what do you if it's too high? Thank you! Pam

Here are my AM #'s for yesterday: (Ben's kit) FC = 6.5 CC = 0 TC = 6.5 pH = 7.7 Alk = 160 Cal = 500 (Too high? How do I decrease this in...

I've seen that new plaster releases alot of alkalinity and some calcium. The water in my area is very soft. (about 50ppm calcium) My questions...

Hi all, I was wondering what the ideal" ph would be for chlorine to work most effectively (yet still in the acceptable range) and what the...

We have a new IG VL pool with an Ecosmarte system that uses an ionic copper process and oxidation. It's a liner pool and the walls already feel very...

I remember some postings on the old forum about a correction factor for TA if you have high CYA. So far, my searches here haven't turned up much. ...

Can you safely use Bens method if your PH is already pretty low? Here are my numbers from this morning: TC - 3 PH - 7.2 ALK - 280 Hardness -...

I have a 16X32 kidney vinyl liner, i cant ge the PH up in the past to days i have 10lbs of PH up no change. Any Ideas?? total alk = 80 total...

I used the aeration method to lower alkalinity from 230ppm to 90ppm. Although the amount of acid now consumed has dropped a lot, the pH insists on...

Hi everyone! Seems that the last week of hard rain showers has lowered my TA.(Is that possible??) Last year was our first year with a pool and I...

I'm a newbie to this forum (although I've been reading for HOURS). This is our 6th season with a 15X30 AG vinyl lined pool, and we've never had any...

I am continually having to use acid in a spray bottle and a tile stone to get rid of calcium build up coming from the grout in between the glass...

Do I need calcium in a fiberglass pool? I've been studying water chemistry to be prepared for my upcoming new IG fiberglass and can't really answer...

3yo IG gunite, swg, exposed aggregate, 17,000 gal 1.5hp Hayward 2sp pump, w/cartridge filter & solar heating; non functional ozonator. From this...

I need to add calcium to our pool and I think I need to do it soon. (concrete/plaster pool Calcium level at 100) I have been keeping my chlorine...

We have a hth 5 way kit walmart from walmart. I've tried multiple times to get the hardness test but to no avail. The reagent works turns the water...

Oh dear! I am a relatively (4 weeks) new pool owner and didnt read the instructions to add chemicals separately. So last night i added some...

I have tried Jack's Magic Blue two times now with a solid week of brushing following each application with no or little improvement. After opening...

We bought a house w/pool in April. The previous owner left some surprises, one of which is a bucket of chemical without a label. It's a white plastic...

:( Can somebody shed some light on this situation for me I am ready to go nuts. I have a 18' x 48" round Intex Pool and this is my second year with...

I have gotton much good info from a thread on another topic. I wanted to bring over here. Long story short- Let my Cl get low, started to get a...

I have a high alk and thinking of dropping it using the sticky thread. My test are as follows. FC 4 TC 4 PH 7.8 T ALK 200 - 210 Ca Hardness...

I want to lower my alkalinity in my hot tub...is it safe to add muriatic acid to the spa with the jets bubbling? What is the calculation to lower...

Thanks to all of you for this forum. Yep, another newbie question. Even though the directions say to add the CH increaser by broadcasting,...

Happy Fourth of July everyone. I wanted to do a quick numbers check to make sure everything is going well. My numbers as of this Tuesday morning...

will borax have a greater affect on ph than TA? I've been trying to get my TA down (its at 230 right now) with muriatic acid. As I expected its...