wtf is this

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Hello guys I have a white cheese auto on day 47 now and I keep a very close eye on her.... there are only a few leaves that are beginning to spot like this I just wanted some input on what it could be and hopefully head it off...

If there is any additional info needed please ask I dont want to mess this thing up she has been an absolute beauty until noe I would like to keep it that way thanks ahead of time for any input
 
After looking at pics im thinking maybe calcium or mag?
 
atrain- ..most likely early Ca defc., with that scattered spotting on leaves (2nd pic); the brown tips and on the serrations might be something separate; roasted tips are usually a sign of mild/early nute burn,... browning on the "teeth"-- a less common symptom in Ca defc....a less likely possibility is K defc.,... what bloom nutes do you have? -- need NPK #'s please,.... And any soil pH readings for us? ..meantime, give her a dose or two of Ca supplement,...
 
Im using advanceed nutes grow micro and bloom together they make up 4 4 4 but it is in miracle grow soil pre fert wich sucks I have only ised nutes 1/4 strength on the last 3 watering I think im going to go back to straight phd water from now on.... I dont have a cal mag supplement do you thing adding epsom salt to reg water will help her out
 
...yeah man, that MG soil is problematic at best! it explains the tip roasting, even at the mild fert' regime you've used,... problem is, which nute, or nutes, are in excess and causing the burn,...pH plays a huge role in this too, BTW,... I'm just making an educated guess, but likely with that soil, it's too acidic,...the tips-- has damage progressed, or is that older, now stopped? See, it's difficult to make a solid recommendation on what to do without the right info, mate,... if pH is off enough to interfere with absorption, adding nute's to treat defc. may be pointless, even damaging,... if the tip damage is older, and stopped progressing, upping the nute's a bit may help if there's a K defc. issue, but that's not certain,... fortunately, all symptoms are mild now, and sometimes they have to advance some in order to show specific diagnostic clues,... So, try getting some dedicated Ca-Mg supp's, or even molasses would be okay; it has Ca, Mg and even some K in it so it'll cover the bases for now,... plus the sugars will make the soil herd happy, making the plant happy in turn!.... treat at 1tsp/qt,.... epsoms don't have Ca in them, it MgSO4 only,.... good stuff, and I wouldn't hurt to add some anyway, as it's often at this stage that plants develope Ca-Mg defc. issues,... same dosage too,...
 
Thanks man I used molasses on my last feeding I think im going to skip nures and just use epsom and molasses for the rest of the time being and ill pick up an actual cal mag sup soon
 
Waira Brother is spot on a.t, sorry it took so long to get in here! I was out late last night...
 
Its all good brother thanks to both of you as stated before this is a new sign not an old that has stopped but luckily I caught it early I mixed up 2 gallons of water early this morning added 2 tsp of molasses and 1 1/2 tsp epsom and phd down to 6.1 ive been bubbling the pot since and ill water her tinight before I go.to work let me know if this doesnt seem like a vuable option
 
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