I have started a new starter with 4 oz. flour/water, feeding daily, and holding the temp at 73 degrees F
After 10 days of small bubbles and nothing else, I added pineapple juice instead of water for 2 days. Now at the 14 day mark, I have sour smelling goo with a lot of little bubbles, but no rise. I feed every day, and about the 4 hour mark after feeding I get a little rise but no double in size, and by feeding time the next day, the mixture is flat and goes back to the little bubbles and sour smell.