Hi MajicMike,
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.
Thanks
Gloria
And peat gets acidic too.