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worms
how would you ever get the roots out?
np. glad to share my limited experience with this unique medium. :) not many others have played with it yet.
very well actually. however, i worry about mixing plastics into organic systems....worms ingesting tiny bits of plastic fiber and such. that is one of the biggest drawbacks of sure-to-grow imo. you can't really compost it in the classical sense and you'll never really be able to separate out all the roots and organic matter from the little bits of fluff.
i was excited about stg at first because of the light weight and wicking properties, but now i'm switching over to growstones (in place of hydroton). they're made from recycled glass right here in the USA and being just silica are safe to mix into organic/biological systems or just toss out onto the ground without fear of polluting. plus, gravel-like media can be easily shook loose from the roots letting you toss the root ball into the compost pile.
are you avoiding gravel-like substrates because the weight of it all would make inserting/removing individual plants difficult? hydroton and growstones are pretty darn light-weight, but certainly heavier than plastic fluff.
once a plant matures, i reckon you'll have a heck of a time yanking the root mass out through the tiny hole either way.
is it packed full of sure-to-grow? i think you're going to have problems with the media sagging/sinking downward as it collects solids. I think it will also stay too wet.
Let us know how it goes.
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