I live in Texas where septic systems are pretty well governed. They
require that the aerator systems be adequately chlorinated... which I
am grateful I don't have to smell my neighbors discharge. However, I
am becoming annoyed at spending $180+ every year for chlorine tablets
when I understand liquid bleach dispensers are also allowed by law.
However, these dispensers typically run $300 and look like PVC pipes I
could get from my local home supply stores. I want to try and do it
myself and save the $300 equipment/installation cost and start using
household bleach.

Question 1) Can anyone point me to plans how to build my own?
Question 2) From my research, it appears ~1 gallon/month is the
typical bleach usage. Does this sound correct to people who already
use/know about bleach dispensers?
Question 3) Absent any plans, and believing the usage is ~1 gallon/
month, I believe I could cap a PVC pipe to hold some bleach and
integrate an IV drip dispenser. According to my math (which I won't
go into here unless requested), I figure I can set the IV drip on a 60
drop/ml to 1 drop every 11.4 seconds to dispense ~1 gallon of bleach/
month. By placing this dispenser between my two tanks (where I
currently drop the chlorine tablets) I expect I would achieve
approximately the same mixing effect as I do with tablets. The end
effect of this is for $20 I could build my dispenser and start using
household bleach saving an additional $150+ each year.

Thoughts/Corrections/Answers?

Thanks in advance!