+rep for another lyon.
With those concentrations you should be using an eye dropper. Which is what I would've posted, but not everyone is keen enough to handle something that powerful. Honestly, a 1:10 ratio is still pretty strong. I think the horticultural companies use something on the ring of 1:30.. but I could be wrong about one or two of them.
Just think about how much water you are buying...
Sulfur won't build up in the system, period.
You might ask, why?
The answer is simple. Plants need sulfur, it is a micro nutrient left out of a lot of fertilizer brands (except General Hydroponics). Plants will eat that shit up!
I see absolutely no downside to this method, what-so-ever. In my mind, this is the only logical recourse to pH problems.
I'm glad there are other enlightened minds still on this board.
E