Newbie challenge: smallest growbox ever

Phytotoma rara

Active Member
Hi guys, this is day 32 and I'm having some issues with this lady:

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She's showing interveinal chlorosis in some of the older leaves and also some necrotic spots are developing (red circle in the picture, i had another leave showing this more clearly but couldn't take a nice picture). Also, some of the new leaves have tips culring up, some of them burnt.

I thought this could be Mg deficiency, so I flushed with abundant tap water ( pH~6.8 ) and measured the pH of the runoff with the last pH strip i had, the reading was about 6. I hope this helps solve the problem, if you have any thoughts about this, please let me know.
 

Phytotoma rara

Active Member
Well she's not better today but still growing strong. After yesterday's flushing i fed her today with Biobizz Biobloom. She grew quite a lot:

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eastcoastmo

Well-Known Member
Looks like a bit of cal and mg deficiency mate, probably caused by the low pH locking out the vital nutes. A pH of 6 is way too low for soil, you want it about 6.5-6.8. Some dolomite lime would help with calcium and to keep the pH up a bit too.
 

Phytotoma rara

Active Member
Thanks for the feedback guys! Today I'll go check some experiments at the Plant Physiology lab (not weed related) and I'll have a chance to ask my teacher for some recommendations on solving this issue. I'll keep you updated.
 
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