Yellowing leaves.

[Oa.ahhu]

I have noticed a yellowing at the edge of some of my leaves. Just wondering if their is an obvious solution? All of it is bag seed 2.5 months old under (18) 32w overdriven (2x more ballast per bulb) t8 bulbs . Photos taken under normal lights with flash.

 

[Dirtbag]

Looks like potassium deficiency. What are you feeding them? Looks like a little too much N too. Too much N can inhibit K uptake.

 

[growsince79]

I have noticed a yellowing at the edge of some of my leaves. Just wondering if their is an obvious solution? All of it is bag seed 2.5 months old under (18) 32w overdriven (2x more ballast per bulb) t8 bulbs . Photos taken under normal lights with flash.View attachment 967540View attachment 967541View attachment 967542View attachment 967543View attachment 967544

What kind of soil and what are you feeding/watering?

 

[2bmello]

You have slightly to much N, Leaves are dark green so tops look light. There is burnt tips and margins which also suggest nutes. Just give one water with no ntes and then carry on but with a touch less N. Looking great, well done.

 

[Aqua Man]

Yeah over fed and seeing a lockout. You will see more to come in all likelihood. I can see potassium and iron deficiency and nitrogen toxicity. Soil pH is likely low a good flush is in order. Then cut back on the nutrients.

 

[Oa.ahhu]

Just flushed every plant with sledgehammer and used bounceback a bit later. I was hoping it was something not so bad thank you for the information. I appreciate it.

 

[Oa.ahhu]

Also for those asking i used promix organics for the soil , and a 2 inch layer in every pot of coarse gravel. I used built an indoor raised bed/greenhouse duo that i transplanted them into just an hour or so ago.

 

[Kidbuu]

I know it's more rare but what about zinc deficiency?

 

[detroitjoe]

Uhmm...all the plants..or just a few?

 

[Oa.ahhu]

Uhmm...all the plants..or just a few?

All , i kept most of them in pots that were a tad bit small, so i just built a box around the canopy so that id be able to increase the area available to each plant. I pulled all of them out and built the frame and the drainage pipes. Then i added a breather that sticks out of the soil 12" to provide aeration to the lower part of the soil, filled up with a soil mix and transplanted them back in. The canopy is covered by 22 32w 48" fluorescent tubes 18x 6500k 4x2700k all are overdriven to 2x. Power output is really around 1.7x.

 

[Oa.ahhu]

UPDATE: