I know what the general consensus of this forum is regarding ORP (at least now I do). Unlike most things on the internet, I trust what I read here and I wish I had read before I invested.
I picked up a OEM refurbished Etatron DLXB Rx/M ORP metering pump on eBay for $99 (good price). Picked up a Hanna ORP electrode and was on my way to good things . Mind you, I used to maintain 3 indoor "pools", with ORP controllers, for the U.S. Navy, about 200,000 gal total with ridiculous BOD (another story for another day).
My set up: Pressure side of main pump into electrode cell back to suction side of main pump. Bleach is injected after the sand filter. I have the metering pump operating slowly because I realize it takes time for the bleach to circulate before it makes it back to the electrode.
My unexpected result is that if I set the metering pump to inject fast enough, as the water circulates the ORP reading drops. This does not make sense and I was wondering if anybody knows why
Most likely, after experiencing some of the ORP issues I should have read here first, I will set my target ORP very high and set the dispensing rate slow enough to let it run all day thereby turning it into a continual feed system. I am just interested in knowing why.
FC 33.5 (fighting algae)
cc 0 (passed OCLT this morning and will double check tomorrow morning)
cya 70 (yes, I know )