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Maybe PPMs then?

Oh definitely. As long as the heat isn't too much, they can go up to 2000 or more especially if your pumping that much CO2. Check the ppfd on a bright sunny day and you'll understand what I'm talking about... I'm curious about your EC and what medium you're using?

CalMag creates the worst chemical taste of them all... Do not use as a foliar spray in flower! I don't know about cannacure, but really, it's just better not to spray anything on those buds if you can avoid it... Besides, they're looking super healthy. Maybe a touch overfed, but super nice...

It's a touch early yet, but it's tough to say for sure. Best bet is to spend the $15 bucks to get a jewellers loop. That will give you 40x zoom, more if it works with your camera. Wait for them to just barely start turning amber, some people wait for half of the trichomes to be amber, but I...

How strong are you feeding these guys? I suspect overfeeding... CalMag specifically actually... Are you adding that as a supplement? What brand of coco are you using?

Light can be deceiving also, use regular lighting and watch for almost blue leaves. Good indication that they're being over fed.

I agree with iron deficiency to a point. pH should fluctuate sometimes to allow different nutrients to be absorbed by the roots. The middle of the leaf is yellowing due to iron deficiency, the tips also look like they're yellowing in one of the pictures which is nutrient burn, too many nutes...

ALWAYS check your trichomes before harvesting. I'd start checking mine at the beginning of the "last week", but I've grown a couple strains that took another week on top of that. That being said, I know I stunted them right at the beginning of flower, but not for a full week... Either way...

Totally works... I used 3 on some small month old cuts and they grew just fine. That tiny little guy is going to take a looonng time to fill that pot. Best root development occurs in properly sized pots. Should have gone with a solo cup first, and transplanted up. Not a huge issue, just be...

Lower branches, okay, that's somewhat better. Good call.

Rosin with the press? Best advice is to play around with the heat and humidity, too much moisture and it tastes like crap. If you use butane for shatter, dry it out as much as possible and grind the shit out of it first, contrary to everything I've read, it yielded incredible results, dark has...

Really hope I can... Hands are tied for the most part by the shackles of employment...

Was it also an attempt to increase tops, (noticed a previous post)? If so, get around to it in veg... Always... Not only is it more beneficial, but also a LOT less risky. Topping or trimming branches adds quite a bit of stress, which in flower increases your risk for them to go bananas, if...

Your runoff EC will almost always be a bit higher, as long as it's within .6 (if I recall correctly) then you're good... Cocoforcannabis.com is a great site that I highly recommend for info on growing with coco. Enjoy.

Curious, why did you do that in flower?

Pretty close to the defoliation that I have to do, but we do it in week 3.. it's great for light penetration, which seems to help lower buds get the light they need to actually amount to anything. Slowly getting my boss to see the value in topping the plants twice in veg, once we change the...

That's precisely it... it's called cation exchange, calcium and magnesium bond to the coco more readily than potassium, and prevent the roots from getting any... A bit greedy I guess... So if it's already buffered then that would suggest that we don't need to add much, as the calmag would...

Wow... CalMag is such a joke guys... Cocoforcannabis.com explains it very well and very... Lament... The reason you "need" to add CalMag is for the coco... Coco loves calcium and magnesium and it bonds to it, and doesn't let the roots take it up. Look up buffering Coco coir and you'll...

I like that you brought up buffering of the coco. I've worked with 2 "growers" that had no idea what I was talking about... conducting my own research, I later learned that the brand we use is buffered with calcium only, and that the calmag additive is more for the coco to hold on to than for...

So I have this theory... I could be totally out to lunch... I have similar issues, 4 grows in a row, tiny brown spots appear, then about a week later I see magnesium deficiencies pop up too. I believe that I'm overdosing CalMag, but so far haven't been able to test my theory because well, I...