Please review my chlorinator calculations...

[000utback]

I want to replace the old tablet feeder on the well with a liquid system in the basement. Stenner pump or similar. There are several online feed calculators in addition to the Stenner manual, but I get mixed up when I look at their total consumption. I plan to inject after the pressure tank, then use a retention tank, then on to distribution. I plan to use a proportional system based on a flow meter after the pressure tank. Part of my confusion is that the calculators assume 24 hrs/day operation. According to the meter on my softener, I average 100 gal/day. Wow, that means my well pump only runs 20 minutes/day, approximately. That means the Cl system would run very little. If I cut household bleach 1:6 I'll get 0.875% in my dose solution. If I treat my water at 2.3 ppm Cl, that means that I'll only use 9.6 gallons of treat solution PER YEAR. If my meter is set on 1 pulse/gallon, the pump (3 gal/day max) will be set about 76%.
Obviously, a 10 gal Cl batch is not going to stay good for a year. I would think mixing every 3 months would make sense. If I'm not all wet, I guess that means making smaller batches and measuring bleach with a cup rather than gallon. I can't increase the dilution rate with the pump controller already at 76%. What's going on here? finally showing my age?
http://stenner.com/support/pump-siz...-pump-classic-series-pcm-water-meter-chlorine
my data as above plus Cl conc 0.875%, 3 gpm max pump head, 1 pulse/gal meter, 10 sec max PCM cycle gives 1.89 gal/day Cl solution, but that's for a 24 hr day. I won't run anything close to 24 hr.

 

[Reach4]

See if this matches your math. http://www.handymath.com/cgi-bin/chlorined3.cgi?submit=Entry

You will want to read the free chlorine after your contact tank to make sure you have enough residual.
These look good to me:
http://www.lamotte.com/en/drinking-water/test-strips/2963lr-g.html total chlorine
http://www.lamotte.com/en/water-wastewater/test-strips/2964-g.html free chlorine

While I think free chlorine is the one you want, you might want to get both kinds.