I have recently begun my first grow using the PF tek and things are going better than I would have expected for my first grow, but still not perfect. Here's the story:
I made 2 jars, which took about 6 weeks to colonize (possibly my fault for not providing a consistent temperature). This was 2-3 weeks longer than I would have expected, but they eventually made it without contamination. After birthing/dunking/rolling/double end casing they began to pin like crazy within a few days. Each morning there was more pins than the night before, so I was quite excited. This excitement quickly wore off after the pins showed little to no progress after a week. One or two pins would grow to about 1/4 inch long, then just sit there. After over a week of waiting for the pins to grow I decided that they were all aborts, so I scraped the cakes clean to remove them before they started to rot. The cakes were feeling a bit light, so I re-dunked them.
It has now been almost 2 weeks since I re-dunked and re-double end cased and the cakes are repeating what they did the first time: lots of pins with a few that grow to 1/4 inch then quit. I can't figure out what I'm doing wrong. Humidity in my fruiting chamber is consistently between 95-100%, temperatures are about 72 degrees F, I fan at least 4 times a day, and give them 12-14 hours of light from a 6500K "daylight" compact florescent bulb.
The "strain" is Puerto Rican, which (according to my research) is supposed to be a tough pinner. I seem to have no issues getting them to pin. I just can't get them to grow. The spores were from a vendor that gets pretty poor reviews (I should've researched them first...). Could this be the underlying issue here?