The stretch has finally stopped, the burns are also slowed down, the green seems to be normal and the buds are slowly getting bigger. All good. Calmag I've ordered turned out to be a "buffer for soft water", don't know how to mix it in a hard one :-D Probably will try with the next solution mix
Brother you need a little cal mag in your life lol, it contains a little nitrogen which will help to darken up the leaves plus obviously keep the calcium and magnesium issues especially in coco. EC is quite high they must be a strain which maybe requires higher than average levels.
To be honest though they look real goodπ
@bobtheblob, canna actually now sell a cal mag additive so might be worth buying theres.
Many company stripped the cal mag out of their 2 part feeds over the last few years to force us to buy a separate bottle lol
@Esoteric_growing, yep, I reuse it all the time and probably not flushing it properly, that shrivelling looks like chem burn to me. Not all seedlings suffer from this though, so it's a combo of bad coco + sensitive gal I guess