metronome
-
Posts
5 -
Joined
-
Last visited
Posts posted by metronome
-
-
Tried the thiosulfate, one drop then two, still purple. I even had Taylor check the lot numbers and the reagents are fresh.
I've never seen anything like this.
-
That is the test kit I have. Since I completely drained this last time and added no Bromide or activator, I'm wondering why I can't get a valid pH value and why would I get the the 10ppm running a dilute 1.8ml Bromine test?? This is still basically tap water as I've only added dry acid to lower TA. Could my municipal water supply have such a high level of chlorine that it will skew a pH test??
-
New 450 gl. hot tub w/ corona discharge ozonator Knew we had soft water as you can't wash off soap.
The first fill I completely over-dosed with bromine. I added 2 oz. bromide. Then foolishly filled a floater to the brim with tablets. This went on for 48 hours. Upon further research I read that I really didn't need a floater all the time, just activator. We did get a 2nd filter and rinsed and swapped them for 3 days per the installers advice.
TA was 800, calcium hardness was 0 and the sanitizer was rendering the pH purple. I tried draining 50% of the water but still could not obtain a pH value with my Taylor kit even with adding thiosulfate. The pool supply store also said my bromine was 10ppm, phosphates 1000 and calcium hardness 70.
I drained the tub, rinsed a filter and re-filled using an eco-one hose end filter. I've added NO bromide. Have been adding dry acid.
TA is down to 100 but pH is still giving a purple response. Did a dilute bromine test at the 1.8 ml mark and obtained ~10ppm.
Where is this halogen coming from?? Can the filters trap excess bromine when I OD'd it on the first fill. I'm stuck.....
-
Contact the Tarrant County D.A. office
Soft Water Ta & Bromine
in Hot Tub Water Chemistry
Posted
Funny you should ask W 0f W...
as I was repeatedly being told that the purple was due to excess sanitizer I NEVER did an acid demand test untill 30 minutes ago. I kept adding dry acid and got TA down to 110 as of this afternoon. Well the acid demand indicated a 7.4 with the addition of TWO drops.
Perhaps I've been dealing with tap water that is > 8.0 all along.
One question...
does excess bromine (if present) invalidate an acid demand test with purple water from a skewed pH test??