I used 91% Iso, I put the bubble hash in a small jar with the iso, I mixed it, then let it sit for a few minutes then strained it thru stainless steel coffee filters, and there is still a shit load of plant material, cause I read your thread, I used a fan and put in my veg room, I was neon green looking, at first then as it evaperated, it turned shit brown with material in it, I added more iso and filtered it a second time and it still has way too much, material in it, I then put it in the oven, and it came out a dark brownish/greenish tint, its like modeling clay, it burns for a second then it turns to ash, no bubbling at all, if any thing I think I made it even worse, I'm going to wait and try it again, with some good trim, and make some, good bubble, then try to make iso again later on. cause it don't burn worth crap, you get the strong hash taste and hash smell, put you can't really get a good hit, once it ignites you get a little hit, then nothing.