apparently yes. I have heard of people getting an unwanted reduction on their beads in the kiln, and not knowing why. usually a kiln cleaning is in order here because of the accumulated build of of reduction materials. I have also heard that people using activated charcoal will forget, and have a whole slew of reduced beads that were not supposed to be. I have not had this happen, my kiln is pretty good to me, but I imagine that the reduction would not be all that great, just a slight reduction. It would be worth trying
Let me know if you need some charcoal, ill mail you some. I have a big bottle for the fish tank. (its great in the fridge, it filters odors)
I honestly have thought about hooking up my HH just for the reduction factor! It was amazing!! I cannot get the same reduction I did on my HH. Its close, its just not the same.... However I do not think that with a HH you need to add any reduction, YOU GOT IT!!
It is by far the best reduction I have ever gotten.