red/orange dots blotches on leaves

[Prince_Fajita 32]

okay so coming upon week 6 flower getting close now guys but ran into another problem. started getting red/orange blotches on the fan leaves and tips seems to be curling. in soil from seed, 4x4 space, intake, outtake, extra circulation and osilating fan. room temps have been quite cold again because winter doesnt seem to want to fuck off for good but it didnt seem to affect the girls too bad last time round. feeding with oldtimers bloom and been giving em hints of calmag. anyway as soon as iv noticed everythings been flushed well and there about to resume half strength feeding with pk boost. any help appreciated ?

[MyDisplayName2000 2,069]

May be wrong but first glimpse it may be LSF.

 

If it is, read up on it and how to stop it spreading.

 

Don't panic, it might not be and if it is you can deal with it.

[Al Swearengen 4,081]

I wouldn't say LSF. Looks like a calcium deficiency caused by possibly over watering and the cold. Is the Pot heavy? Some varietys I have to cut back on the watering/feeding after the stretch especially when the temperature drops . What variety is it ? Don't worry your nearly there . I don't water till runoff like many advise , I water less but more frequently. 

[GSZZ 25,526]

Overwatered (especially if bottom feeding), cold, and too much PK are all causes of calcium deficiency and reading the OP I would hazard a guess that all 3 are causes. Not to mention if a grower adds Cal mag without any need for it, chances are they'll cause a deficiency supplying too much and muscling out the other nutrients. 

[Prince_Fajita 32]

5 amherst diesel 2 amnesia so far the central amnesia seems to be most effected ?  not bottom fed, i have been supplying calmag just from being too cautious . golden syrup seems to making most sense but talking about lsf has got me worried seeming as its in a general area rather than effecting single plants . They got a good flush the other day, but my watering cycles have been all over the place. im just so close i dont want it all to go to shit. so what do you guys recoommend? light feeding until final flush and finish ? hit it with the pk then start final flush ? i just dont want this final decision to be my last one if you get what i mean. 

[Prince_Fajita 32]

and i heard that fungus and mold spreads under your fnger when you rub it. this isnt speading or mushing if yous get me ?