E-indoor or outdoor - Indoor
E-soil, soilless, coco, aero, or hydroponic - Soil
E-specific medium - Soil + Perlite
CSL-Soil type/brand - Canna Terra Pro
SCL-Anything you have added to the soil - Phosphoric Acid to the water to lower pH a tiny bit
SCLR-Soil or slab runoff pH - originally 7.5 from the tap, I bring down to 6.8 with H3PO4
E-Age of plant - just over 5 weeks
E-Type of fertilizer - BioBizz Grow (NPK= 8-2-6)
E-Rate of application - water-water-feed, but they got it a bit early this time due to potting up, so they had 'water, feed, water' most recently
E-Lighting source and distance from plant - 250w HPS about a foot away with fans
E-Air temperature (both day and night if you are running a dark period)- 28ºc/82ºf day - 20ºc/68ºf night
E-Air % Relative humidity - bit high 70-75% the last few days, usually 65%
E-Lighting schedule - 18/6
E-Type of ventilation your room has - RVK100A1 (175m3/hour)

This seems to have gotten a lot worse in the last 2 days. This made me think it's an over-nute thing but it looks so much like some of the deficiencies I've seen that I'm not so sure. My nutes are pretty mellow stuff. Plus, other than the small one, which was given 2ml/litre (low dose), they were only just given water the last time. They are still growing quickly and they greened up after getting their nutes the last time but then this odd stuff on the leaves just happened. I was thinking Mg or Ca deficiency but I have no idea.

I looked underneath and with a crappy microscope and I don't see any pest infestations. I just see spotty strange leaves. I've had a few of those larger spots on the lower leaves for a while and attributed it to a high pH, which I've now sorted out and it seemed fine until this recent strange spottiness.

Any ideas?

Here are a couple plants that are affected:

[attachment=o204677]

[attachment=o204679]

- this is the "runt" that was given 2ml/litre (low dose) on the last watering
[attachment=o204678]
It has none of those spots previously and the leaves were more straight/unturned.

PlainJane Reviewed by PlainJane on . Deficiency or over-nute? Leaves look strange E-indoor or outdoor - Indoor E-soil, soilless, coco, aero, or hydroponic - Soil E-specific medium - Soil + Perlite CSL-Soil type/brand - Canna Terra Pro SCL-Anything you have added to the soil - Phosphoric Acid to the water to lower pH a tiny bit SCLR-Soil or slab runoff pH - originally 7.5 from the tap, I bring down to 6.8 with H3PO4 E-Age of plant - just over 5 weeks E-Type of fertilizer - BioBizz Grow (NPK= 8-2-6) E-Rate of application - water-water-feed, but they got it a bit early Rating: 5