m0useanswered grow question a year ago Could use another brand of carbohydrates, or also add in other bacteria that ferment or breakdown things in the medium.
LABS, Lactic acid bacteria solution. Bokashi liquid, bacteria all options. There is something to be said about a aspirin dissolved in its watering solution, it triggers a defence repsoce from the plant and makes its stack on trichomes. however the amount needed is low and to much can cause the plant to be negatively impacted. It mimics a chemical single that the plant makes when it getting attacked by bugs and stuff, then the plant gets it and boots the defences. Or that's how I remember it working.
Also another none stress related option Fulvic Acid, helps nutrients be absorbed better and can boost the plants ability to grow.
Some options, should all work fine in coir and synthetic ferts. but do a sample first to confirm it won't brick out anything in the fertz.