Iv got a ravenberry going, just a few days in at the moment, going to be put in a 20L Autopot (aquavalve), using Sohum soil, so just ph'd water to feed, nice n easy. 
Got some kings kush finishing off, then my 2x2x4 will have all the space it needs, although yours looked quite big! 
Got ravenberry x5 seeds, 24 karate x 5 seeds and freebie of 4 passed monkey crossed with something I can't remember. 
I'll be following this one grow ie. 
Big up OP and big up Mephisto