Okeydokey, to bring this to its glorious conclusion...
I have two of them dosers working for two weeks now, no visible problems. I say visible because the whole deal is rather invisible. I measured a certain amount of liquid into the bottle, and put the date on it... So I know it should take 4 months to empty out, and I will check once in a while to make sure it does not empty out overnight or something like that.
Something to keep in mind is that not all checkvalves will work with this. (Anyone needs a good number of black plastic Tetra checkvalves?
)
And, like I mentioned before, if you place the container above the tank level you might get a siphon going (not good).
Pretty sweet once it is set up and working... need to refill this late December, remind me if I forget.
