I remember that at one point some hose used a chemical to keep them flexible that reacted poorly with nutes and killed plants. What have Krusty Bucket builders used successfully for in-bucket air hose?
I have used these peoples product for soaker hoses
very good quality
all the best
I used 1/4" soaker hose myself. I bought a roll of it many years ago now.
I’m sure 1/2" would work, with whatever air pump your going to use. Some of us were buying salvaged medical equipment, and removing the Thomas pump from them, as I could not afford a new one.