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Chlorine readings in new tub fill and start up chemistry

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bud16415:
This is odd. That part of your water chemistry shouldn’t be much different than when you were on bromine. I’m no expert maybe others will offer advice. You filled the tub with tap water just as before? I guess you could test your tap water straight from the hose. That would tell you if your pH was high from the start or something you did.

Botswana:
Yea, same water as usual, straight from the outdoor backflow unit. When I filled I got like 50 for alkalinity so I added enough to get it to 90. Guessing that caused pH to go up too much. After some toying, I think I have alk at 80  and ph at 7.8. Preferred 7.6 but I'm tired of the going back and forth. Shocked and installed @ease and mineral cartridge, will see if my skin holds up

bachman:
I'm in the early stages of everything on my tub but getting more acquainted as I read up water, chemistry etc....
Did you ever hear of or read of a write-up by someone as "Nitro" ? Not sure if it's 100% the gospel but it's just technical enough and not too lengthy to possibly be of some help or even great help. He explains he is not well experienced in bromine so his subject is centered on chlorine but he offers a link to a good write up on bromine as well.
The good take I get from it is it covers all parts of the chemistry within the interaction of each item you add or adjust and it's effect on the whole system. They way it's written up seems to get into the nitty gritty details, yet he has a very handy summary at the end to recap the important parts. I'd guess it's 4 -6 pages if printed off but I think he has worthwhile info for any type of adjustment challenge one faces.
If you haven't seen it and want the link, I'll track it down.

~bach

Botswana:
Thanks for the response. I've seen it before. Cant say i read it word for word but it seemed like good stuff. I get the general fist of the chemistry but it's still just somewhat frustrating. I feel like the hot tub industry as a whole is still like 15 years behind the curve with everything, including chemistry products. (Not a mean dig). Atleast chlorine doesnt seem to be effecting my skin like bromine was so I can actually use the spa! I'll reference nitros stuff if I stop using the smartchlor/mineral combo

bachman:
I plan on keeping a file for some ref stuff as I go through things. I just know months down the road or sooner, I'll think to myself that I read something about this or that but won't know how to fix or remember the source.
It seemed Nitro and his other link in there spells out what effects what and if this is too high or too low then you need to do this or that. Just the kind of cheat sheet or summary I need to keep handy.
Aeration was mentioned for controlling or tuning ph , that was news to me.

I know I'll get things a bit sideways and have some hands on experiences soon myself. I'd say our bather load is 2 - 3 people (same ones and same suits) 4 x week for the past 2 weeks.

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