Here are a few soil mixes that I have tried that I didn’t like very much. I’m not sure why anyone would read this, but it helps me keep track of what I have tried.
Soil Mix 1
Material
Amount by volume
Kellogg All Natural Indoor Potting Mix
100%
This soil stays too wet for my purposes. It also grows fungus across the surface. Not every time, but on a few cells that I planted with seeds. That fungus prevents moisture from soaking into it. I think the pore space is a little too low as well.
Soil Mix 2
Material
Amount by volume
Kellogg All Natural Indoor Potting Mix
50%
Pumice 1/8”
50%
This material drains well and has a level of absorbency that I like. It seems to form a crust on top. I’m not a fan of that. I’m guessing there might be some soluble materials that solidify when the water evaporates and glue the soil together.
Soil Mix 5
Material
Amount by volume
Coco Coir
67%
Pumice 1/8”
33%
Seemed to be pretty decent, but stayed soggy for a long time when watered. I really do like the Coco Coir. I think maybe more pumice, or trying vermiculite or something else to loosen up the mix would be good.
At some point I think our cat climbed into the bucket and went pee in it! There were dirty footprints outside of it, and when I tried to use it there was a very strong ammonia smell. Eww! Bad kitty!