Cal/mag deficiency? Or what?

[kod42]

Camera isn't the best! That's why there is a few pictures. Even included a pic of the whole plant. But my question is, is this cal/mag deficiency it's a lil hard to see on some pictures but first pic is good. it's underneath the trichomes and a orangish/brown color is starting to form on the new leaves only

 

[Mr. Mohaskey]

I'm sure others will chime in who are more experienced than me, but sure they will ask for more info; nutes, temp, humidity, lights, ph, ec, etc.

Without all that.... Nute burn?

 

[kod42]

That's true could be nute burn

 

[kod42]

I'm sure others will chime in who are more experienced than me, but sure they will ask for more info; nutes, temp, humidity, lights, ph, ec, etc.

Without all that.... Nute burn?

Using pH perfect trio micro grow bloom. Barely gave them grow last watering and using plain water every other water, temp is at 68 at night and around 78 thru 81 during day. Humidity is at 55-60 I have a ton of airflow. Two 110 watt light and one 160 watt light.

 

[OldMedUser]

That's not calmag deficiency. Looks more like a little light bleaching or even water damage.

Lack of boron causes symptoms like that and I had it bad with some plants a while back. I added a tsp of boric acid powder, from the drug store, to my tank and it cleared up tho did not fix the affected leaves.

I'm pretty sure that's not it because the rest of your leaves all look great. You don't spray anything on them do you because water on the leaves can cause necrosis like that in spots even in the dark.

 

[OldMedUser]

That's true could be nute burn

Not that. Nute burn shows as burnt tips and the tips along the margins of the leaves in mild cases. Fried, twisted, burnt all over leaves in really bad cases.

Using pH perfect trio micro grow bloom. Barely gave them grow last watering and using plain water every other water, temp is at 68 at night and around 78 thru 81 during day. Humidity is at 55-60 I have a ton of airflow. Two 110 watt light and one 160 watt light.

I've used those nutes for over 20 years and after the stretch switch to Lucas Formula style feeding. No Grow and half as much Micro as Bloom. I don't follow the regular Lucas style instructions as they are usually much higher ppm than I want to use. Just 1ml/L Micro to 2ml/L Bloom ratio. That's only about 200ppm if I remember right but just mix that into a litre of water and test the ppm to see then adjust up if you want more for your feeds.

Some added Epsom Salts will give the plants some S and Mg which they really like in later flowering. Sulfur helps with resin production and is in most bud booster formulas. AN Big Bud has 10%S.

I don't think you have anything to worry about unless you see the problem showing up all over the plants. I tend not to fret much after hundreds of plants using all sorts of grow methods and nutes. I've had to deal with all sorts of problems since my first buds in '78.

 

[farmerfischer]

Yeah @OldMedUser is right.. thats not nute burn.. or cal/mag..
Top leaves when they look like that could be sevaral things really.. phosphorus, zink, boron, iron..

 

[Grow Monster]

Using pH perfect trio micro grow bloom. Barely gave them grow last watering and using plain water every other water, temp is at 68 at night and around 78 thru 81 during day. Humidity is at 55-60 I have a ton of airflow. Two 110 watt light and one 160 watt light.

At night when your temps drop what is your rh?
70%+? Just curious. Could be early light burn issue. Looks like its in the middle and just starting at the top. When its subtle burn its hard to tell til later. I'd wait to do anything. Let it either reveal itself more or fix itself thru nutes. Dont think its cal def. U dont wanna misdiagnose and make problem worse. It could've been water/nutes got on it and fried it a lil. Doesn't look to be a major issue in any case.

 

[kod42]

That's not calmag deficiency. Looks more like a little light bleaching or even water damage.

Lack of boron causes symptoms like that and I had it bad with some plants a while back. I added a tsp of boric acid powder, from the drug store, to my tank and it cleared up tho did not fix the affected leaves.

I'm pretty sure that's not it because the rest of your leaves all look great. You don't spray anything on them do you because water on the leaves can cause necrosis like that in spots even in the dark.

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Ahhh I did spray some trifecta ready to spray crop control that I diluted with alot of water bc it was almost gone that could be why that's true bc also the hairs are turning a little orange on some buds

 

[kod42]

At night when your temps drop what is your rh?
70%+? Just curious. Could be early light burn issue. Looks like its in the middle and just starting at the top. When its subtle burn its hard to tell til later. I'd wait to do anything. Let it either reveal itself more or fix itself thru nutes. Dont think its cal def. U dont wanna misdiagnose and make problem worse. It could've been water/nutes got on it and fried it a lil. Doesn't look to be a major issue in any case.

No they don't jump up. They actually go down a little bit I put a little space heater in the same room and turn it to low that's just so it's doesn't go below 60°f at night. I'd say it's at about 50-55 rh at night and 55-60° at nigiht

 

[rocknratm]

I agree with the above, not cal mag or nute burn.
Could be micros deficiency, but more likely light burn/water/moisture on those leaves as someone has already said.
I wouldnt worry too much unless it gets worse, but dont spray anything from now on. I would never spray plants with anything during flower, except CS before lights on if breeding.

 

[kod42]

I agree with the above, not cal mag or nute burn.
Could be micros deficiency, but more likely light burn/water/moisture on those leaves as someone has already said.
I wouldnt worry too much unless it gets worse, but dont spray anything from now on. I would never spray plants with anything during flower, except CS before lights on if breeding.

Okay I am not breeding just yet this is my first grow. Will try that in the future though lol. But will do I won't spray anything on the leaves from now on I added about 12ml/gal of micro to water this time and used 12ml/gal as well for bloom I also added a little bit of grow only 1ml/gal. So I'm not sure if it's micro deficiency unless I have a lockout but I will keep a eye on it.

 

[OldMedUser]

Okay I am not breeding just yet this is my first grow. Will try that in the future though lol. But will do I won't spray anything on the leaves from now on I added about 12ml/gal of micro to water this time and used 12ml/gal as well for bloom I also added a little bit of grow only 1ml/gal. So I'm not sure if it's micro deficiency unless I have a lockout but I will keep a eye on it.

Seems a little high on the nutes there. 4ml/L is the max dose that AN says to use but at that stage of growth I would be using around 2ml/L if using all 3. You're basically using 3ml/L which is not overly high but a bit. Running Lucas style I would have given them at most 6ml/gal Micro and the 12ml/L Bloom so to be using half as much M as B. The Micro is quite high in N compared to the Grow and too much N can retard flowering. Most of the Mg is in the Grow bottle so I would add 1tsp/gal of Epsom Salts to make up for the lack when not using Grow.

I'd bet the brown spots are from the spraying so don't worry about it if it's not spreading and don't spray stuff on buds. Ever.

 

[kod42]

Seems a little high on the nutes there. 4ml/L is the max dose that AN says to use but at that stage of growth I would be using around 2ml/L if using all 3. You're basically using 3ml/L which is not overly high but a bit. Running Lucas style I would have given them at most 6ml/gal Micro and the 12ml/L Bloom so to be using half as much M as B. The Micro is quite high in N compared to the Grow and too much N can retard flowering. Most of the Mg is in the Grow bottle so I would add 1tsp/gal of Epsom Salts to make up for the lack when not using Grow.

I'd bet the brown spots are from the spraying so don't worry about it if it's not spreading and don't spray stuff on buds. Ever.

Okay I will bring down both micro and bloom and won't use grow. I also won't spray anymore I don't know that so thank you. And okay I will add Epsom salt later on.

Also is this bleaching at the tips of the buds that light green or is that new growth? Lights are at max but they are some Chinese light and they are 17 inches away they are about as high as they go I got them off the daisy chains and and at the last hook on the lights so I can turn them down if it is bleaching

 

[OldMedUser]

Every strain I've ever grown almost gets those yellow tips on the leave's even when I deliberately feed low ppms. If it gets worse, spreads up from there and/or the leaf margins begin to look all 'jagged' and their tips start yellowing then those are signs of nute burn.

I used to burn plants all the time or end up with toxic salts buildup that starts frying leaves around mid-flower and just trashes them until I found out more about VPD, Vapour Pressure Deficit. We have very low RH here, (20% at 80f right now in my veg tent), which causes the plants to transpire a lot more water than they would at a higher RH. Even at modest ppm levels it will pull up more salts than it can use so they get stored in the leaves until it builds up to toxic levels and the leaves basically fry from the inside going all yellow/brown all over the leaf surface and going crispy and thick feeling. Mostly happens first with lower and older fan leaves but can start up top if leaf temps have been a shade too warm for a long time then the plant is running more water up there to cool the leaves and the salts buildup is worse there.

I see this on lots of posts with people asking what's going on but get answers like 'more p man!', 'low k man add more!' and stuff like that. Adding any more salts of any kind is just going to make it worse. The minerals in tap water are all salts too and contribute to the problem as well.

There is no cure but you can slow the progression by flushing really well followed by a low dose of balanced nutes. Don't wait for the pots to get dry if in pots as your plants will starve until fed but it can force the plants use up some of the forced nutes if there's none in the root zone. Easier with hydro.

No problem in sight yet.

 

[kod42]

Still look like it's from spraying something or does it look like a deficiency now? I haven't sprayed anything since and it hasn't gone to any other leaves then the leaves by the buds.

 

[kod42]

This is my first grow will it mess my buds up I've been feeding normal amount and I cut back on N so any advice would help

 

[inth3shadowz]

Seems a little high on the nutes there. 4ml/L is the max dose that AN says to use but at that stage of growth I would be using around 2ml/L if using all 3. You're basically using 3ml/L which is not overly high but a bit. Running Lucas style I would have given them at most 6ml/gal Micro and the 12ml/L Bloom so to be using half as much M as B. The Micro is quite high in N compared to the Grow and too much N can retard flowering. Most of the Mg is in the Grow bottle so I would add 1tsp/gal of Epsom Salts to make up for the lack when not using Grow.

I'd bet the brown spots are from the spraying so don't worry about it if it's not spreading and don't spray stuff on buds. Ever.

Good advice...the 6/9 formula etc turns out WAY too hot for me Atleast...I did 2 micro 3 bloom for veg and 4 micro 6 bloom in flower and it was much better.

 

[kod42]

So 3ml micro in a gal then 6ml of bloom to a gal or 3 and 4ml in a liter?

 

[inth3shadowz]

So 3ml micro in a gal then 6ml of bloom to a gal or 3 and 4ml in a liter?

I did 2ml micro/3ml bloom per gallon for veg and 4ml micro/6ml bloom per gal for flower. Equalled like 400-420ppm (Hannah scale) and 600ish for flower. Keep in mind I used tap water, so you may need to adjust depending on your water.