Hey toke mate, glad that it seems your on top of these issue bro... I was gonna suggest... just to know it's not something you maybe doing feed regime wise... stick a plant in compost in there... In a compost that wont need feeding for at least 3-4 weeks.... this way you can rule out if its an issue with your feeding regime, a lock out or whatever... If you just add plain tap water to the compost and get the same symptoms then you can rule out everything bar an environmental issue - temps RH gas off.
I would also use a mix of tap water and RO to get the 0.2 u require... this way calmax is also out the way as a suspect.
Everything looks good in the latest pics, lush n green
Hey Shhh, that`s a cool idea bro, thanks. If I find that I haven`t got this under control with the measures already undertaken, I`ll defo bear that in mind.
Yeah was gonna mix half and half today, but forgot to run some tap water the day before thus allowing it to dechlorinate before mixing, so I went with Calmax at ec0.2.
Next res though I will give it a go tho, I think the Calmax is adding too much N, especially the strength I was applying it, even though that`s well under the recommended dosage stated on the bottle. I`ve noticed some tip burn on some leaves despite keeping ec`s at a low level. Also my last grow stayed ultra green right to the end and didn`t even drop lower leaves that were under the screen.
Cheers, Toke