fluffy mycelium ?

I have brown rice cakes that I just put in a fruiting chamber and the cake won't stop growing fluff. What should I do? Dunk, shock, or continue lighting cycle in chamber? Is this normal?

looks strain specific or expression specific. If I didn't know better I'd say it was monocaryotic.

I'd say more intense light, more air exchange, and some low temps might help. Send those signals loud and clear.