The difference in 'N'

Can anyone tell me what the physical difference will look like with N Deficiency or N Toxicity??

I have never seen either of these, So idk if this helps any.
N is for nitrogen and helps the plant bulk up(height and leaves)

N Deficiency - Leaves are pale green to yellow
N Toxicity- Super dark green leaves, leaves look blotchy almost wet

Would N tox make the yellowing spots on my lower leaves? im currently 3 weeks into 12/12 and feeding about 1 1/2 - 2tsps Tiger Bloom every watering (about every 5 days).

what"re the numbers on the fertilizer?
you dont want a high level Nitrogen fert for flowering you want a higher potassium level

24-56-13- the first number is nitrogen, the second number is potassium, the third potash
for getting the plants big you want a high level on nitrogen.
for flowering you want a higher potassium level for more and bigger buds.

2-8-4, they are flowering nutes. I use them every watering because I only water every 5 days or so. I add 1-1/2 to 2tsps per gallon of distilled water. I also tried flushing with pure water last time and most of the "hooking" of the leaf tips stopped, but now I'm getting yellow spots on the mid to lower leaves. Mostly on the lowest and 2nd lowest fan leaf set.

I'll post pics if no one has an idea.

thats a low flowering nute. i usually use somewhere around 40 or 50 for potassium.

maybe your watering too often? it dosnt sound like nute burn

sounds like a Potassium def. spotted lower leaves usually signal this.
Either your PH if off, stopping the absorption of K, or you need to feed it more potash rich fertilizer.
Im not sure, but some micro-nutrients can also cause defiances in absorption and utilization of macro-nutrients... and if your PH is off, it will effect the uptake in all areas. balance the ph, and feed with a good chemical based flowering fertilizer. the reason i say chemical, is because it will be readily available to the plant, and wont have to be broken down like some organic ferts.

Btownbud said:

sounds like a Potassium def. spotted lower leaves usually signal this.
Either your PH if off, stopping the absorption of K, or you need to feed it more potash rich fertilizer.
Im not sure, but some micro-nutrients can also cause defiances in absorption and utilization of macro-nutrients... and if your PH is off, it will effect the uptake in all areas. balance the ph, and feed with a good chemical based flowering fertilizer. the reason i say chemical, is because it will be readily available to the plant, and wont have to be broken down like some organic ferts.

Click to expand...

Ok, I'm using FF Tiger Bloom which is pretty recommended throughout the growing community so I don't know... Maybe I'll up the dosage to 3tsp / gallon instead of 2 and see what happens. I'll take some pictures tonight when the light turn on so you all can get a better look. Besides the lowest fan leaf set, she looks completely healthy and DAMN gorgeous. Non of the new growth is being effected and really not even the undergrowth of that fan leaves node. Very strange unless it's just natural dying of the leaves going into flowering. I know for sure it's not over-watering because I pretty much dry the soil until it's feather weight and the leaves start to droop. I learned from old over-watering mistakes.

I do have a pH meter and I pH my mixture every water and it's always in the 6.5-7 range (I'm in soil). So that should be perfect. Although I've had some recent incidents that make me think this pH meter is junk. I think I'll invest in a little better one for everyones safety lol...

Well you need to measure the PH of the medium it's self. not just the water you put in. Roots of a plants actually act as a soil regulator, depending on the types of nutrients it gets, the root will release either a hydrogen, or a hydroxide ion, which changes the PH of the soil. Some mediums are more susceptible to PH change then others, this is called the CEC (Cation exchange capacity). There are a few ways to test the PH of your medium, but the most important thing to remember is that you want to measure the soil closest to the roots, not just the soil on the top. The easiest i find is just measuring the run off, you may find that you medium's PH varies from the PH of the watering solution.

Do you ever calibrate you meter with 2 different points of testing solution?