Alllllllrighty then. Sorry for the absence my friend. That does indeed look the rot or even brown algae. But there's neither the smell not slime? I ended up getting Z7 and haven't had a problem since. Before I got that, I used t-shirts to wrap my buckets to use as a type of insulation and...
Ive been chomping at the bits to get a new tent, but haven't had the room. At our new house we have plenty of room. And the mad scientist transition behind.