Yellowing fan leaves....????

[Shugrows]

Ok I appreciate it...I know I'll mess up just trying to do my best that all......I'll stick to what I'm doing and cut the strength back instead of 900ppm I'll do 600....for flower and 400 for veg.....

hell yeah man. We are trying to our best. thats all we can do. Sounds like you got a good plan

 

[kfigerm]

never mind the tips, that's a little collateral damage on finding the max feed. They went into flower and sucked up a lot of nutes already.

So perhaps something that may come into account, concering the first pic with the little spots:

If you feed calmag and !think! you run into (p - looks like perhaps, not sure yet) or Ca def though ,

check the PH. Most probably you ph slowly (got/gets) out of range.

a litle writeup now...

What I have learned from DWC (where you have absolutely no buffer and feed direct - perfect ion-flow) and still try to follow:

Solution PH
- ... stays nice...everything is fine and you are at least a bit over the level the plant "wants" to take als long as you see no burns, feed is OK - the uptake of solution is in balance and ion exchange works fine and keeps balanced. No free electrons looking for a proton lurking around.

- ... goes up...osmosis and ion-exchange goes "reverse" or is blocked, the plant keeps the uptake of ferts in it's desiret water/solution ratio, so the water ratio in the mix falls and ppm/EC in solution rises (less water in solution, but nutritients stay the same - if the ratio went out of bound you may also have a lockout of some element-you overfed / are out of ratio of some element to high.

- ... goes down...the solution is to thin, the plant sucks off more nutes than there are in the needed ratio, osmosis tries its best, so leaves look and feel strong, but you start to see little defs. - you underfed or are off ratio, where one element is missing.

for dwc the main thing is to learn when you are out of ratio, to do a fresh res, or add the needed (easy for secondaries, not advised for NPK imo), the rest is manageable.

Farmers learn that to calculate the Ca need for their nutritients to preserve a good PH, because any nutritient-transformation generates acidous "waste"
the Ca binds the acids. They use it for that mostly, not for a Ca "def".
For soil, there's this buffer thingie.you need to watch - which is well supported by Ca.

So you can actually have too low Dosage of nutritients, even if you do once a week a "good" feed without recognizing at first.
how it happens - lets assume, the soil is already sucked (which often appears to be just the time they go to flower and meed more, or a different feed-ratio now anyway and a P lack is what most people observe first when using "normal" cannabis suited fertilizers, shortly after that come Ca def signs):

Good feed once - leaftips go brown or bend like on your photos, you think you overdid, because of this showing..and yes you did, but only for a short time to manifest this damage.
The other nutritient free feeds in the period...well now at some point there's something missing...ph in soil goes down
repeat - you salvage the def with a new feed and things don't go visibly too bad, but....repeat....ph in soil goes down
repeat - repeat
now you see deficiencies, but worse, the ph in your soil already went down low..

So try first to check the ph, if thats still OK, fix the def, but don't necessary feed less - stay (a little lower) where the tip-burn occurs, just try to fix the PH.

Thats the real secret sauce behind TaNGs scedule I think! - all reps to him!:
1) don't overwater, because where there is no soluant left before the ratio can get out of bounds, nothing can be sucked out of it and nothing gets out of balance
2) feed regularly and steadily according to the plan(t), at some time leaving some more in the soil and sometimes takes more out of it, but never in an extreme out-of-bound ratio/amount.

all that is just for the case that you you feed calmag and !think! you run into( p - looks like perhaps, not sure yes) or Ca def though

Thats a thing why you want to watch for the burnt tips and curling leaftips...as long as you see them and theres no burn around (and the ratio fits to the plants stage), you feed enough, to prevent a low ph in soil. And you really have a Ca def only if the PH is OK.

That said...I just have PH isues too, I didn't take care enough and have to learn it again once more, so I share.

corrections/additions at any time welcome. I'm here to learn.

Cheers

kfigerm

 

[GreenBean]

Your plants look good, and it’s ok to mess up. That’s how we learn. Observation is the key. The plants will let you know what they can handle.

 

[InkAddict$]

never mind the tips, that's a little collateral damage on finding the max feed. They went into flower and sucked up a lot of nutes already.

So perhaps something that may come into account, concering the first pic with the little spots:

If you feed calmag and !think! you run into (p - looks like perhaps, not sure yet) or Ca def though ,

check the PH. Most probably you ph slowly (got/gets) out of range.

a litle writeup now...

What I have learned from DWC (where you have absolutely no buffer and feed direct - perfect ion-flow) and still try to follow:

Solution PH
- ... stays nice...everything is fine and you are at least a bit over the level the plant "wants" to take als long as you see no burns, feed is OK - the uptake of solution is in balance and ion exchange works fine and keeps balanced. No free electrons looking for a proton lurking around.

- ... goes up...osmosis and ion-exchange goes "reverse" or is blocked, the plant keeps the uptake of ferts in it's desiret water/solution ratio, so the water ratio in the mix falls and ppm/EC in solution rises (less water in solution, but nutritients stay the same - if the ratio went out of bound you may also have a lockout of some element-you overfed / are out of ratio of some element to high.

- ... goes down...the solution is to thin, the plant sucks off more nutes than there are in the needed ratio, osmosis tries its best, so leaves look and feel strong, but you start to see little defs. - you underfed or are off ratio, where one element is missing.

for dwc the main thing is to learn when you are out of ratio, to do a fresh res, or add the needed (easy for secondaries, not advised for NPK imo), the rest is manageable.

Farmers learn that to calculate the Ca need for their nutritients to preserve a good PH, because any nutritient-transformation generates acidous "waste"
the Ca binds the acids. They use it for that mostly, not for a Ca "def".
For soil, there's this buffer thingie.you need to watch - which is well supported by Ca.

So you can actually have too low Dosage of nutritients, even if you do once a week a "good" feed without recognizing at first.
how it happens - lets assume, the soil is already sucked (which often appears to be just the time they go to flower and meed more, or a different feed-ratio now anyway and a P lack is what most people observe first when using "normal" cannabis suited fertilizers, shortly after that come Ca def signs):

Good feed once - leaftips go brown or bend like on your photos, you think you overdid, because of this showing..and yes you did, but only for a short time to manifest this damage.
The other nutritient free feeds in the period...well now at some point there's something missing...ph in soil goes down
repeat - you salvage the def with a new feed and things don't go visibly too bad, but....repeat....ph in soil goes down
repeat - repeat
now you see deficiencies, but worse, the ph in your soil already went down low..

So try first to check the ph, if thats still OK, fix the def, but don't necessary feed less - stay (a little lower) where the tip-burn occurs, just try to fix the PH.

Thats the real secret sauce behind TaNGs scedule I think! - all reps to him!:
1) don't overwater, because where there is no soluant left before the ratio can get out of bounds, nothing can be sucked out of it and nothing gets out of balance
2) feed regularly and steadily according to the plan(t), at some time leaving some more in the soil and sometimes takes more out of it, but never in an extreme out-of-bound ratio/amount.

all that is just for the case that you you feed calmag and !think! you run into( p - looks like perhaps, not sure yes) or Ca def though

Thats a thing why you want to watch for the burnt tips and curling leaftips...as long as you see them and theres no burn around (and the ratio fits to the plants stage), you feed enough, to prevent a low ph in soil. And you really have a Ca def only if the PH is OK.

That said...I just have PH isues too, I didn't take care enough and have to learn it again once more, so I share.

corrections/additions at any time welcome. I'm here to learn.

Cheers

kfigerm

Thanks