Ok, I spoke to the Dom this morning...he told me that the dedicated 'Sugary Kefir Grains' that are used for making the 'Kefir D'Aqua' and other juice/water ferments are hard to find.
His stopped propogating, however, they CAN and WILL continue to ferment and make 'Kefir Water' fermented beverages...you will just not have them making babies to increase your stock for 'give aways'.
Also, he says if you are using, previously 'Milk Kefir Grains', they will stop reproducing in a 'Kefir d' Aqua' (sugar water or juice) ferment, but will convert enought to be happy in that medium, and will be able to be used on a continual basis!!!
The Dom told me:
"For your reference, in the same note as the above, although milk kefir grains cease propagating in a sugar solution [to prepare a water kefir of sorts], they too are capable of preparing a water kefir on an ongoing basis. Infact, I have the same batch of once milk kefir grains, produce water kefir since 1999."
So while you will not have the 'problem' of too many grains, you can keep using them over and over for making 'Kefir d'Aqua' and other sugar water/juice type ferments!
I would and he would suggest putting them in a 'bag' made of a pourous material and keeping them in the brew jar you are using for your 'Kefir D'Aqua'...then they are easily fished out, makes straining so much easier, and you won't have to remove them and worry about leaving little bits in the jar as they will not keep growing! Nice huh!
This is really good news!!