:smoking:- yeah, I
meant to do that!
you my friend, are doing pretty damn well considering the shwag you have to grow in (construction waste!!
), high RH, and limited nute' sources,... the J47 is filling in nicely actually!
With high RH, the transpiration machinery bogs way down, because of the low evaporation rates; this is the key to the drawing power up from the roots, along with the nute's!... coupled with that, coco coir needs to be seriously rinsed, best with a Ca-Mg solution to help knock loose the Na and K cations bound up naturally on the particles,... water alone isn't enough usually,... coco has unique CEC properties, which binds up a lot of the Ca and Mg because they displace the other cations, so it's something of a hog with Ca-Mg,... it may be that some of the coir isn't well rinsed, with really high Na content, which most plants detest (toxic at low levels on many kinds),...even the fekkin' weeds!
... LED's seem to cause elevated demands on Ca as well, something about the nature of that type of light is monkeying with the cellular physiology/metabolism,... I'm surprised it isn't far worse, mate!-- must be the molasses,.... I imagine your water there is pretty soft? ..... Hmmm, wonder why the 'mater food is so nasty,...any info on the label?- sourcing of the base nutes, etc.,.... "soil" pH, might be in play too, but it maybe not so bad, or there'd be worse symptoms,.. coco does like to run more acidic than true soil, so,... maybe next trip to Europe, you can get an Accurate 8 soil pH probe and/or a pH meter for liquids...? --have your friend pre-order it, so it's suitcase ready when the time comes,.. or would that be dicey? hey, you grow your own tomatoes, right?! What suspicious!
LOL! ..... keep gringin' my friend, and I'll thnik on things some more,...
..and have anudda one 'f these for making gold outta shite!