Spreading like a wild fire... need help asap

alphapinene said:

2/3 of my plants (both chemdawgs) are showing signs of what I think look like a manganese deficiency or lockout. The plants haven't been overwatered (kept slightly on the drier side). Spots have been progressing very fast, first small spots showed up on Tuesday and now they look like this. Flushed one with distilled water yesterday and it only got worse. I'm thinking that I need to lower my PH (haven't tested ph since soil supposedly buffers itself.... or that's what I was told anyway)
All plants are growing in roots organics original soil, top dressing once a week with their dry nutrients/myco, drinking distilled water w/ hydroguard. Watering 2-2.5 liters once every 2-3 days in 3 gallon pots. Plants are on day 22 of flower.
View attachment 4253465View attachment 4253467View attachment 4253468 View attachment 4253469 View attachment 4253470 View attachment 4253471

Note the color difference between the healthy blue shark and chem

Click to expand...

Herb & Suds said:

They are starving , so why flush ?

Click to expand...

pulpoinspace said:

looks like they need could use calcium, use tap water not distilled

Click to expand...

Bernie420 said:

brown spots are cal and the rest is mag / led light too intense on those genetics maybe

Click to expand...

alphapinene said:

In the pictures they look brown but in person they're more reddish/purple. I was thinking the same thing but don't cal/mag def spots look a lot bigger/rust colored? I'm planning on brewing an AACT with kelp meal/ewc/molasses to hopefully remedy the problem.

Click to expand...

Bernie420 said:

foliar feed epsom salt 1.5ml per gal. or 150-200 ppm per whatever. The tea is fine but it isnt going to fix the problem (or not as fast) and dont use alot of molasses.

Click to expand...

alphapinene said:

Cool cool my only concern about foliar feeding is the risk of PM/grey mold as these dawgs are highly susceptible, especially being kinda crowded in the tent, plus i never foliar fed lol. But if it's a quick fix i'll risk it. Thanks man

Click to expand...