I have been lurking the forums for awhile now and first want to say thanks for all the knowledge that I have gained.
I started brewing about a year ago with a BB equipment kit and have brewed about 6-7 different BB extract kits since. I felt comfortable doing this so I decided to read up on partial mash (don't have the space for a all-grain setup). I went to the LHBS and asked around about partial mashing. I found out the owner was actually having a class in a few weeks for all-grain and he told me a lot of the concept for a partial could be learned there. To save my self from possible screw up I decided to stick with what I knew until I could take the class and I picked up the BB Witbier kit.
I get home and started reading the directions and come to find out this kit is a "steep-to-convert" kit. Which to me reads partial mash (could be wrong). I was worried but excited at the same time since it was a kit, but allowed me to partial mash. I followed the instructions of converting the 2lbs of grains (1lb pale malt, .5lb wheat, and .5lb oats) at 148-154 degrees in a gallon of water for 45 minutes (Was pretty good about keeping it in the temp range) and continued on with the boil and got it cooled down ready to pitch.
I took the gravity using my new refractometer I got for Christmas and it read a gravity of 1.020. According to the BB directions I should of been atleast an OG of 1.045. My question is, did I screw something up in the converting that I didn't get all the sugars? Something else that gave me such a low gravity? I pitched and its currently sitting in my closet doing its thing.
TLDR; "Steep-to-convert" kit OG should of been 1.045 but got 1.20, what could of gone wrong?