Root rot eh? oh well, you live and learn. I guess more perlite next time huh. Mushroom compost is no good in my opinion anyway. lol I actually use this Tasmanian compost made from fish and pine bark - thats good stuff, very rich almost black and it smells strong like organic funk. I am surprised the Bio-bugs didnt prevent the pythum from getting a hold. At least now you know what the problem was. I bet the massive amounts of deep red/purple bud will make you feel a bit better.
be sure to post some pics of the dried buds - I wanna see some close-ups too!
be sure to post some pics of the dried buds - I wanna see some close-ups too!