[Phenominal_Phenos]

Magnesium deficiency shows fading or rust in between the veins (like in the pics)

calcium deficiency shows rust spots as “dots” randomly all over the leaves.

phosphorus deficiency shows fading and/or rusting on the outer edges of the leaf.

Do with that info what you will.

[Phenominal_Phenos]

Do you measure your light’s PAR? Sometimes the lighting can affect how much the plant needs of certain things as well. The light can be pushing them too far sometimes.

What I’m trying to say, is the environment has to be dialed in. Get the VPD correct. Control what you can control, but adjust to the things you can’t. If you cannot change the humidity in your tent for instance, then you may need to give less light, vice versa

• This reply was modified 5 months, 1 week ago by  Phenominal_Phenos.

[Phenominal_Phenos]

That looks to be a magnesium deficiency. At this point, in my experience, that plant is telling you it is gonna make a tons of terps, and it needs more magnesium in this phase. I’d try to get a specific magnesium product to add just that little extra. It doesn’t show any signs of needing more calcium.

In my grow, I’d just make a foliar spray with pure epsom salt and water. (I always wash my buds at the end, so a little salt residue will wash off.

Or, you could just make an epsom salt water bath for them once or twice a week.

[Phenominal_Phenos]

I’d throw a trellis net on those. The buds are only going to get bigger and heavier. The branches aren’t strong enough to support it. They’re gonna need support of some kind.

[Phenominal_Phenos]

Personal for some like myself who are vegan for instance, but guano is HOT!!!

Not saying don’t use it…If you do, be careful. It has tons of nitrogen. It is easy to burn your plants with guano or any animal feces/fertilizer.

So, I wouldn’t use it for personal preference. Also, where it is sourced or how it is sourced may be a personal issue for some too.

Remember, the only one who has an opinion that matters is you. Your plants will thrive or suffer because of it.

[Phenominal_Phenos]

I figured that. I use the same app with their diffuser

[Phenominal_Phenos]

If I already had cal mag, I’d use that sparingly. You just want to make sure you aren’t giving it too much calcium in order to increase magnesium.

Again, there may a reason why the magnesium isn’t available or isn’t being taken up. I’ve seen this express itself when the humidity went from 59 to 78. They wanted more magnesium.

The thing is, your garden is different than mine and everyone else’s. Identifying a deficiency is one thing. Identifying the cause is another. Do what’s best for you.

I would definitely try dimming the light a little, OR giving a little more calmag. Whatever you try, do one thing at a time. That way you’ll know what worked. The rest of our OPINIONS are just that, and we all are biased by our personal experience in our own grows.

[Phenominal_Phenos]

Seems like you have it dialed. Still, you are at the top end of PAR with no CO2. That should be just fine, but you’re pushing them hard so just keep in mind some certain cultivars will be more sensitive than others.

[Phenominal_Phenos]

Yw

[Phenominal_Phenos]

Yeah. Gotta get that rh down or the risk is too great for moldy buds.

Yes, I’d hang it by branches instead of whole plant, and I’d definitely trim the fan leaves ahead of time. That would probably cut your humidity down under 64

[Phenominal_Phenos]

Yes. I was responding to the OP. I used to use stakes, but I’m lazy