When I did my first batch there was a lot of kraken... Enough of go through the airlock. I've since learned the value of a blow off tube. My second batch only gave about two inches of kraken. First batch I used the cheap packet of yeast, the second i used a liquid (San Diego super). Should I be concerned that I didn't get a lot of kraken? The first batch took about 3 days to start fermentation and the second took about 15 hours. First batch I was way off on temperature (72-74 degrees). Second batch was much more controlled at a steady 65-67. Any thoughts or concerns?