preservation Making Vinegar

Well, I had 2 buckets of some leftover wine-ish stuff.  The first bucket was done fermenting, no bubbles at all.  I added a pint of Bragg's and I think it has achieved motherhood! Yes?


 
The other bucket was 4+ gallons of blueberry wine that was very active in the fermenting stage and was still somewhat active when I added a pint of Bragg's about 3 weeks ago.  Today, it is still active, these are bubbles on top, not mold.

 
Should I add more Bragg's or just let it keep fermenting until no more bubbles then add Bragg's? or maybe some slime from the other bucket?  Both buckets are covered with 4 layers of cheesecloth.
 
 

If that thin layer is a mother then no you dont need anymore.

I dont see any mother in the blueberry one, the one that is still fermenting. Fruit flies showed up today on top of both batches' cheesecloth. The white stuff you can see at top of the picture is a reflection of the folded back cheesecloth.

If their are dregs on the bottom of the ACv bottle then could drop a few tbsp in their, wont hurt.