New Grower Autoflower question

[p man]

Do auto flowers normally develope brown spots as part of the general genetics because all five of my plants have them.... 3 in soil, 2 in deep water grow....my hydroshop man says I should just use normal growing seed as the autoflower is still relatively new to the market I do like the way they grow so fast but again I haven't figured out about the brown and spotted leafs yet besides it's either lockout, over feed, needs feeding, too close to the lights, needs calcium, needs nitrogen, it's rust, needs cal/mag, but I still haven't pinned it down yet

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[realcarlos]

Mr p-man

check this out and diagnose the plant accordingly
good luck!
https://www.autoflower.org/f7/self-diagnose-your-plants-basic-deficiencies-list-11.html

 

[p man]

thanks ...and thanks for the good luck part

 

[namvet25]

PH lock out,check your PH.

 

[Muddy]

If your pH is good then it's probably a P deficiency and probably a bit of a cal/mag deficiency as well. If you pH is off, then it's lockout.

 

[p man]

I've been using steatlh grow pre mix 1/2 dose now...when I changed the water a couple days later the browning started..so I added aqua flex, cal/mag, and some h202 apx 1 cup to my 3 gal. of water the leaves all started turning yellow now, so I change the water last night and just added some aquaflex, and cal/mag to the mix...ph is good at all times 5.7-6, ppms apx 450-600...any suggestions or help as
to what's going on ...I think the h202 might have made it worse as I was told it kills the bactria good and bad and also cancels out the aqua shield

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[mjauo]

I have had those spots also, mine was ph lockout.