Hi trithumb!
We do not sell individual packs of our growth medium. There are several reasons for this. Firstly, the medium is by far the most expensive component of the kit the produce (especially after labor). Therefore, the medium would, by itself, cost almost as much as a complete kit.
Another important reason for this is safety. The polyethylene cube (culture vessel) gets weaker every time it’s subjected to heating; we simply don’t want one to fall apart and scald someone.
Moreover, the pigments stain the cube, which alters illumination in subsequent runs. And afboundguy makes a great point by mentioning how difficult these can be to sterilize due to the stubborn biofilms (heavy bleach would pretty reliably kill that stuff, but also degrades the vessel, so Catch-22 there).
Finally, and perhaps most importantly, PNS HomeGro is designed to cultivate a polyculture of three PNSB species (each species is grown separately in our production facility and added to the inoculum at the time of bottling); a fresh inoculum
must be used each time to ensure that all three develop properly.
Note that we offer a 100% guarantee of success with this product; that is only possible, however, where a clean and complete kit is used (and instructions closely followed, of course).
Hope that helps!
If you have any more questions about the kit or how to use it, feel free to give us a call at (541) 912-2906 anytime.
