Quote Originally Posted by Malsor
60/40? When I was doing my research on mixing the soil with perlite everyone using FFOF used 30% max. The people who used 20% said they had no problems. I'm going to put at least 1" of perlite on the very bottom then the soil/perlite mix on top.
There is still a bit of soil compaction that happens when you water, the added perlite is to keep the overall density regular to avoid that.