I only got 4 liter bottles out of 18 that went POP. I used a no rinse sanitizer. I was wondering if since I didn't rinse it killed off the yeast in the bottleing step. As a side note I attempted to re-yeast the bottles and gave them another two weeks but alas no POP. I hate it when I ruin a batch. It make me want to quit brewing... for the second time!