Jacks 321 yellowish leaves
- Thread starter canope
- Start date
canope
Well-Known Member
I use both yes
TerpHound420
Member
Ha ha those dimmer knobs will get ya..I just started LED myself and hasn't been easy..
And the quality of LEDs varies so much. I have some cheap LEDs that are 8 inches or less from the canopy and the more expensive one has to be at least 18 inches away. But LEDs tend to damage newer tender leaves first.
Lower your co2 to 1300ppm. Raise the light 6in. I think you need to put more cal-mag I think jacks is cal-nit and epsom. Are you rotating nutes/additives/water? Are you using tap or ro water? Do you airstone your water and use a small pump to stir the water in your res?
canope
Well-Known Member
Ill try lowering co2, im using tap and yes I use air stones
canope
Well-Known Member
I did a runoff check on 2 plants.
Greener plant:
780 ppm
7.3 ph
Yellow plant:
500 ppm
7.5 ph
In the res:
1100 ppm
6.5 ph
Now, it's the first time I check runoff, I poured tap water slowly there was enough runoff in each plate. Did I do this right? From these numbers I chose to pump ppm to 1500 and lower ph to 6. What are you guys thinking?
Greener plant:
780 ppm
7.3 ph
Yellow plant:
500 ppm
7.5 ph
In the res:
1100 ppm
6.5 ph
Now, it's the first time I check runoff, I poured tap water slowly there was enough runoff in each plate. Did I do this right? From these numbers I chose to pump ppm to 1500 and lower ph to 6. What are you guys thinking?
newbplantgrower420
Well-Known Member
Leaves turning yellowing and dying are either a magnesium or nitrogen problem since theyre responsible for chlorophyll.
So its a problem with either one of those. It could be a lockout or a ph problem or maybe you gotta bump up the EC.
Co2 and light have nothing to do with this. Dont touch them... this is a feeding problem.
They look hungry to me. Dont be scared to bump up the EC.... you have co2 and powerful lights. Ive went to 3.6EC before
people who grow in tents with weak lights should worry about burn not somebody whos got his environment dialed in with co2 and split ac units and 600w+ worth of LEDs.
So its a problem with either one of those. It could be a lockout or a ph problem or maybe you gotta bump up the EC.
Co2 and light have nothing to do with this. Dont touch them... this is a feeding problem.
They look hungry to me. Dont be scared to bump up the EC.... you have co2 and powerful lights. Ive went to 3.6EC before
people who grow in tents with weak lights should worry about burn not somebody whos got his environment dialed in with co2 and split ac units and 600w+ worth of LEDs.
canope
Well-Known Member
That’s what I think too, they look hungry but wanted so much not to overfeed that I ended up starving them. You think they can make a spectacular comeback? I feel like they can but the harvest will be delayed by a week or 2
newbplantgrower420
Well-Known Member
ya if you do fix the problem. theyll give you some decent yield. theyre not even close to dead yet. theyre just slowly starving. itll be delayed for sure cause of the stress.
theres no pest issue either right. mice or small animals to chew the plant? The tray with dead leaves just reminds me of when me and my partner had a mouse issue. We thought it was a nutrient issue in the beginning. But found out later it chewed through those reflective insulation foams we had on the walls and it was eating the stalks and climbing up the trees doing all sorts of dmg and leaves were yellowing and dying just like that onto the tray.
and ur mixing Jacks in the order of the A then Epsom and Calnit last right?
theres no pest issue either right. mice or small animals to chew the plant? The tray with dead leaves just reminds me of when me and my partner had a mouse issue. We thought it was a nutrient issue in the beginning. But found out later it chewed through those reflective insulation foams we had on the walls and it was eating the stalks and climbing up the trees doing all sorts of dmg and leaves were yellowing and dying just like that onto the tray.
and ur mixing Jacks in the order of the A then Epsom and Calnit last right?
canope
Well-Known Member
No pest issue, and yeah been mixing in 3 seperate buckets and then thrown in the rez in the correct order
waterproof808
Well-Known Member
1500ppm on the 500 scale is an ec of 3.0. Way too high IMO.
I'm feeding at a straight 321 ratio at 1.6-1.8 EC(800-900ppm), 5x a day and not seeing any issues. When I was feeding at 3.6-2.4-1.2, I was getting N claw, so I lowered it to just 321.
Alot of guys on IC mag say dropping the epsom salts and feeding at a 3.0-2.5 ratio with just the part A and calnit works really well for them.
Maybe consider using fulvic to make nutrients more available and lower your EC and PH to 6.0
I'm feeding at a straight 321 ratio at 1.6-1.8 EC(800-900ppm), 5x a day and not seeing any issues. When I was feeding at 3.6-2.4-1.2, I was getting N claw, so I lowered it to just 321.
Alot of guys on IC mag say dropping the epsom salts and feeding at a 3.0-2.5 ratio with just the part A and calnit works really well for them.
Maybe consider using fulvic to make nutrients more available and lower your EC and PH to 6.0
canope
Well-Known Member
I was at 800-1000 for almost a month and my plants look like they are starving. The only plant that’s doing well right now is the one that was way smaller, it’s all lush and green. Could it be that the bigger (5ft tall trees) need higher ppm?
waterproof808
Well-Known Member
Idk, my plants are 5-6ft in #3 pots of promix and not having any deficiencies.
Also, are your drippers evenly watering your entire pots? Since you are feeding such a high EC, I’d make sure there aren’t any spots being missed by your dripper causing EC spikes. Have you looked at your roots?