Whats Wrong With These Girls? Brown Spots

Are you foliar spraying with lights on? If so it could be burning your foliage. If it's not that, it would be nute burn. Seems a little young for nutes imo.

Its like 2 or 3 weeks old.

And i sprayed with ph water with some calmag. i seen that someone said if you spray with calmag it can help cure a deficency. and there was some salts from when it was watered last.

Im pretty sure its not light burn as its only on 2 of the 3 of my plants

Definitely nute burn.
Not sure who told you that but it only helps a calmag deficiency. Complete false information. ph right some water and spray them back down. Turn off the lights until the foliage s completely dry.

Less is more. Making it a bit more complicated then needed imho.

For example,
I only foliar for pests and deficiencies. And rarely have to spray for a deficiency, only when it gets bad enough. For a new grower, a soil rhizosphere will be your best friend. No need for foliars until your completely confident it need to spray for critters. Cheers!

How do you know its nute burn? and not cal/mag deficiency?

The spots are mostly near the vein.

Looks like it to me, sounds like it to me. Looks like you leave the lights on when you foliar sprayed, which the moisture goes into the ridges where it holds water best. Doing that will burn inbetween ridges. Take a picture with the lights on regular lighting not led. Could be a slight calmag deficiency, but wouldn't treat it until it's a bit older if it is. Easy to burn, this early on, especially a foliar with calmag.

Turns out calmag was locking out phosphate due to hardwater and ph swings

Jokefox said:

Turns out calmag was locking out phosphate due to hardwater and ph swings

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...No it wasn't, trust me that's nutrient that's pooled and burnt a leaf! Phosphate P def as a lock out is not just rare it looks nothing like that on any plant, never mind a baby MJ! But as long as your happy and its growing all good!

It came back with a vengance.
Pretty sure its something with cal.
No sure if its ph or not using enough. Im waiting for calibration stuff for my ph meter. They are growing ok. Alittle slow but ok

Jokefox said:

It came back with a vengance.
Pretty sure its something with cal.
No sure if its ph or not using enough. Im waiting for calibration stuff for my ph meter. They are growing ok. Alittle slow but ok

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Are you still foliar feeding? Spraying?

I started to again last week with more calmag and it was helping. There was some light green spots that went away. The water evaporates rather quickly as my rh is below 20%.
And i just defolaited them pretty heavy.

Plants that don't thrive and look healthy are always victims of poor environments before anything else. Of course it can be deficiency of NPK, Cal or Mag etc but RH20%... Very low, in fact its very very very low? I couldnt say what your problem is as it could be a lot of things but post a few pics, environment as in room size, fans, medium, lights, nutrient regime, air movement, drippers, coco, DWC... Happy to help if I can, and strain is irrelevant ime, MJ is MJ and needs only slight tweaking of PH which sometimes can cause me head pains with my RDWC when I mix different plant strains. However they still thrive but some develop 'pH' spots.

Clarksville said:

Plants that don't thrive and look healthy are always victims of poor environments before anything else. Of course it can be deficiency of NPK, Cal or Mag etc but RH20%... Very low, in fact its very very very low? I couldnt say what your problem is as it could be a lot of things but post a few pics, environment as in room size, fans, medium, lights, nutrient regime, air movement, drippers, coco, DWC... Happy to help if I can, and strain is irrelevant ime, MJ is MJ and needs only slight tweaking of PH which sometimes can cause me head pains with my RDWC when I mix different plant strains. However they still thrive but some develop 'pH' spots.

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In fact I'd probably say if that RH is correct that's 75% of your problem?

All the details are in the start of this thread.
Rh is 10%
And temp is 24. Celcius day time.
20 night

Didnt see what lights but LED I assume? You need to try raise that RH and still keep the 23/24c maybe a fogger is the only solution but I think that 20% RH n 23c combination isn't great. I think you'll see a big improvement on general health if you can get it to 55-65 during veg whilst keeping them temps? Good luck chap!

My fan sucks out fog to quick to be of any use. And the harsh canadian winter has the humidity low as shit. A humidifier will not work. I tried to use my old mushrooms stuff to boost the rh but no luck.
Heres some pics though seeds sprouted nov 12. Had 2 weeks of issues with the led. Switched to cfl for 2 weeks then back to led for the 4th week tell now.
So really only a month of veg so far. Will be going in veg tell the first friday in feb..
I feel like they are still tiny as fuck.
This is my first grow after all. I just cant escape that learning curve :/
Light is a foot away and the buckets are 5 gal from homedepot. Fed and watered every 2 days. Tea is applied saturdays

For the record. I was bomb at growing shrooms. Cacti i was decent at. But i think i lost my green thumb :(

I should also mention. I had cut off most of the large fan leaves over the last 2 days. They had everything covered so not much was getting light. The leaves were the size of my hand

They look great dude! Maybe a touch overwatered. It is common for some seedling so grow very slow in the beginning. Especially with indica dominant genetics and if you are topping a bunch. I recently sprouted some Grandpas Breath and Samoas and they look like they are weeks behind some others I planted with them.
It's also a good idea to use a pot that is relative to the size of the plant. If you start a seedling in a smaller pot (say a half gallon) you can keep them closer together for better light and they will also grow much better because they can only use the water and nutrients that are immediately within reach of the roots. As they get bigger and more root bound, you increase the size of the pot slightly (maybe to a 1 or 2 gallon) and so on and so on. by doing this you will create many layers within your pot and you will prevent your tiny little plant's roots from having to grow ALL the way down to the bottom of those deep containers they're in so they can drink. At this point honestly, those five gallon buckets are a big waste of space and energy and are probably a major part of why your plants are growing so slow.
I'd say if low humidity is an issue, try sealing the room somehow so the water that is within your medium will be trapped within your environment. i'd imagine it would help as long as heat buildup didn't become an issue (With LED's and Canadian winters i find that hard to imagine). Here in Northern California, We have the opposite issue ;). I personally own about $4500 worth in dehumidifiers.