I haven't tried that yet but the "guru" in my local hydroponic store refers to EB's as a hydroponic system so I suspect they will work just fine.
With my hydroponic system I regularly test for pH and TDS so I can adjust the fill water accordingly - not exactly sure how you'll do that with an enclosed EB.
I'll be interested to see how it works for you. Let us know.
And peat gets acidic too.