I don't see any vermiculite in that 'hempy' mix of yours man. Traditional 'Hempy' mix is 3:1 perlite to vermiculite. You need the vermi in there to hold the water otherwise it's gonna dry out too fast. Another tip would be to wait until your plant has a bigger root system before you stick in the 'hempy' bucket. And finally, you HAVE to use hydroponic nutrients in Hempy buckets. H bucket growing is passive hydroponics, and organics seem to just cause problems.
Hempy, the guy who claims to have invented the process, is a member at
Mr Nice Forums, maybe he could help you out a little more. Word of warning, he's a bit of a character....and that's putting it nicely.
Good luck.
edit: I only read the first post. I see you transplanted into soil. Don't give up on hempy, use what I gave you for next time. I tried a hempy bucket just to see how it worked, and I was amazed at how easy it really was and how fast the plants grew. It's a solid system.