diagnosis please

Dutch Passion Blueberry, 1st set of clones from seed-moms..
Soilless, 2x 400wt hps,indoor 4' x 4' tent, F & D, PH 5.8
,AV nutes, grow, bloom , cal-mag, karma, hydroplex, H&G r.e., supertrive, 1/2 to 3/4 sugg strenght
no bugs or mold, temp & RH good .
6 wk of flower
Happened to last batch also, maybe too late to stop now,
would like to correct for next batch !
thinking Mag diff.,
any ideas ?

yellow/brown leaf spots between veins

its hard to tell but it really does look like calcium deficiency. although you are already adding cal/mag it might not be enough. some mj girls love more cal/mag than others. in my case i have a northernskunk that really feeds heavy on the magnesium department.

BobBitchen said:

Dutch Passion Blueberry, 1st set of clones from seed-moms..
Soilless, 2x 400wt hps,indoor 4' x 4' tent, F & D, PH 5.8
,AV nutes, grow, bloom , cal-mag, karma, hydroplex, H&G r.e., supertrive, 1/2 to 3/4 sugg strenght
no bugs or mold, temp & RH good .
6 wk of flower
Happened to last batch also, maybe too late to stop now,
would like to correct for next batch !
thinking Mag diff.,
any ideas ?

yellow/brown leaf spots between veins

View attachment 2372642

Click to expand...

Why do you think it's a magnesium deficiency? You're adding calmag. I think you are adding too much stuff. They look pretty green and the leaves are clawing. I would flush and water with just your base nutes at half strength.

a better pic...

prob... mid- top growth...

To me, looks like a combination of overwatering, and too much N from the dark leaves and the drooping/clawing.

imchucky666 said:

To me, looks like a combination of overwatering, and too much N from the dark leaves and the drooping/clawing.

Click to expand...

What I was thinking

Do you know what your PH is? [FONT=Tahoma, Trebuchet MS, Helvetica, Arial, sans-serif]Magnesium gets locked out of soil/soiless growing at PH levels of 2.0-6.4 Instead of it being deficient, it could have a "Magnesium Deficiency" caused by "nutrient lockou[/FONT][FONT=Tahoma, Trebuchet MS, Helvetica, Arial, sans-serif]t" caused by "high PH" [/FONT]

Been hot here, but Im not overwatering

PH 5.8

The more I think about it (bad thing!) maybe K tox, locking out mag.

Too much Hydroplex maybe ?


hhhmmm ???

spider mites

if not mites...........calcium def

No Mites... I'll go with cal def

tnx all...

Yep.. a bit more cal/mag & am golden again


almost ready :-]