I'm starting to feel like we are hijacking Buds' thread with the design options of these things. His journal is about his grow, not our exploration of the various elements. So,
@Buds Buddy just say the word and we can take these tangents over to either my or
@ReservoirDog 's thread.
That said, I'll answer a couple here while we wait for Buds to provide direction.
I know, right?! Comfortably over a pound. Was quite a plant.
Nice term, "connecting bridge". Emilya's design seems different.
I built my outside vegetable garden sips with the 4" drainage pipe and it works great. You just need something strong enough to support the weight of wet soil above while also providing for an air gap between the water and the soil, and also some way to bridge the two.
With hers, soil is packed down around the drainage pipe, and her garden cloth placed on top and then soil on top of that. The air gap is made by drilling a hole in the container wall at about 3" from the bottom so that when water is added it only partially fills the pipes. Then, the soil packed around the pipe will absorb and wick the water to the layer above the cloth. I've used sand, hydroton clay balls, etc. but lots of things will work for that connecting material.
Do you mean a low pot that's 4" tall, or a pot with a 4" dia. at the top? The "dome" of the GroBucket spans the dia. of the base of the 5 gal bucket.
Lol. This is yet another design option and is how I build mine. In this one, there is a false floor in the bucket with a 4" pot (tall and wide) in the center filled with the connecting material. The rest of the area below this false floor is the reservoir. It's usually built with two nested buckets, but I had to make do with one because of height issues in my veg space. In this one, again, the hole is made at a level about an inch below the false floor to create the air gap,