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being unable to find regular vermiculite this time of year i bought this stuff called Miracle-Gro Seed Starter Potting mix
The ingredients are vermiculite 65%, sphagnum peat, and wetting agent
then it says
I wanted to use this in place of regular verm in the substrate and the dry layer can anyone tell me if this stuff will work of will i have and problem, and why? It looks like regular verm with a little dirt mixed in:) Any help would be great thanks :P
If you want to use it like filter layer in the cake absolutely NO! The presence of organic material will guarantee you a TOTA L contamination. Times ago I have used a vermiculite layer wich was "contaminated" with a very little rice flour ( maybe 1 spoon over 6 cups). All 12 cakes get contaminated. Never Use organic material for filters or smtg like that. Instead, if yuo plan to use it in the mixing for the cake could work fine....
...If you want for the filter layer you can use Polyfill or cat sand ( the one without chemicals, parfume, caking agent and smtg like that). Polyfill will definitly work worst than vermiculite ( 40 % contamination more) BUT IF YOU DO NOT HAVE ANYTHING ELSE...Cat sand will absorb Humidity... so it is better if you plan to use this teck that you provide a Humid growing chamber
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