This is a neccesity not only for rain/leech issue, a weird effect happens that the edge of the soil where it meets the vertical pot wall starts to dry and separate because due to plastic just laying on top its the only part exposed to air. That's the last place you want spot-drying, that's supposed to be moister than many other places due to condensation against the vert. pot wall.If I use plastic I'd possibly have to extend it to go over the pot rim
Worms love life under some high breathable mulch and the shower cap style over top. Thety vacation up there, no shit. I set it up to settle with 2-4 inches space and put straw on top and then the showercap. Amendments under the straw and a sweet drink if that's your jam.I have often seen worms quite happily living underneath some plastic
Best thing you can do is make the cover from a plastic that's white on one side, black on the other and put the white side up. Plants really like the reflected light and it will help keep your matric/roots cooler. A breather hole or two if its warm, is advisable.
How did you find the DIY air Injection project? DId you have to water like a madman?
Stunger if you do a SIP it'll be plant of the year if you don't win for the last one, and maybe even if you do. I swear to you the hair on the back of my neck just stood up. Spidey-Senses!
OMG, send me seeds brother! Just joking, I know, prohib