I had ocean forest and pure blend pro dialed in with just under 30% large perlite mixed in. Which probably was about 50/50 in the end.
Now i am trying to do the same with pro mix and dyna grow stuff. At the moment i think i have over fed a bit and am now seeing the buildup. It did not show in the runoff. But the soil could be holding it.
I was battling the root aphids so i am kind of starting all over experimenting wih drainage and nute strength with the new to me medium. My prior experience was when i was very new at this.
So I really dont see signs of bugs but i didnt before until it was too late. But i am seeing signs of over and under feeding and some leaf stress.
I will treat next with more
botanigard so its 2 weeks in a row and add only .8 ec and see how we do.
The first 6 plants will have to live with stock perlite.
And i know what uou mean about watering to fast and floating all the perlite. I keep doing this with the fungucide to ensure even coverage. And now the top os all perlite. ;-)
I cultivate the top 1/2 inch of the soil with my moisture probe or fingers. Helps get it back in there next watering.