Hi you all,
Here are the numbers for reference:
pH 7.0-7.7 (reducing to 7.0-7.2 when possible to lower TA)
TA 150 (high was 180)
water temp about 75
I am in the process of trying to bring my TA down from a high of 180. Yesterday it was 150, today it was 150. My TF-100 is about a couple of weeks old now, but yet I still continue to wipe the tip of the R-0009 (I think that it is the one) as per the instructions so that this does not affect the results. Yesterday, I added about 1 gal. of muriatic acid and today I added 138 oz.; fyi, I am only using the 14.5% strength as I am not comfortable with using the 31%. I thought I would really see a differnce in the TA today, but no. I even did the TA test a seond time, but used the 10 ml sample as per the extended test kit directions. My result this was 175. Also, I am running my pump/filter longer, about 7-8 hr for aeration; normally, I run it about 4-4.5 hr right now. Am I missing something? And, to bring down the TA, does the pump need to be run this long (> or = to 7.5 h)? It is the reduction in pH to 7.0-7.2 that is lowering the acid, right? If I am thinking about it correctly, it is only the aeration that is needed to bring the pH back up.
This brings me to my spa. If necessary, I can post the following in the spa section. The pH in my spa is probably between 7.2-7.5. I use bromine in my spa, per the OTO test today, it was probably 8-10. I have not tested my TA lately, so I will get around to that when I have a chance. Per Waterbear's instructions on using bromine in the spa, I learned the ideal bromine level is 4-6, and it is recommended to wait to use it until the level is <8. What is the recommended pH level in spas? Still the 7.2-7.8? How about TA? I think I read a post that stated it is lower than in pools, maybe 40-60 if I recall correctly. I will have to look for that thread.
Tx for the help. Hope all are having a great weekend.