what's wrong with these plants?

[Buddhapest]

I have a few new plants in a bunch of different systems and setups but they all have the same problem. A few of the leaves will yellow at the tips and some will eventually fall off, I check and replace my nutrient solution regularly but the problem persists. does anyone know what this problem is and how I might cure/prevent it?

 

[SeeRockCity]

are we checking our Ph?

 

[Buddhapest]

Yup, keeping it at about 5.6, usually don't have to do much but down it every once in a while.

 

[CLOSETGROWTH]

Using ph up or down is toxic to plants. And will cause lockout.. believe it or not. Get some real good soil and add 2 1/2 tbs of finely granulate dolomite lime per gallon and you will never need to check ph again. The lime stabilizes it throughout your grow. Also, the lime adds calcium and magnesium which marijuana craves.

 

[hexthat]

I have a few new plants in a bunch of different systems and setups but they all have the same problem. A few of the leaves will yellow at the tips and some will eventually fall off, I check and replace my nutrient solution regularly but the problem persists. does anyone know what this problem is and how I might cure/prevent it?

what do you feed them?

Using ph up or down is toxic to plants. And will cause lockout.. believe it or not. Get some real good soil and add 2 1/2 tbs of finely granulate dolomite lime per gallon and you will never need to check ph again. The lime stabilizes it throughout your grow. Also, the lime adds calcium and magnesium which marijuana craves.

phosphoric acid, potassium hydroxide, and potassium carbonate lockout what exactly?

 

[SeeRockCity]

Using ph up or down is toxic to plants. And will cause lockout.. believe it or not. Get some real good soil and add 2 1/2 tbs of finely granulate dolomite lime per gallon and you will never need to check ph again. The lime stabilizes it throughout your grow. Also, the lime adds calcium and magnesium which marijuana craves.

I use Ph up to offset my nutrient solution...
haven't had any adverse reactions yet.


I also saw leaves like this on a plant that I gave nitrate based CaMg in flower....

 

[Buddhapest]

I am using MaxiBloom my tap water ec is about 400 so I use enough to make it 2.4.

 

[Buddhapest]

I also foliar fed with a 1% Cal-Mag solution because I thought it was an Mg deficiency, was that bad?