Is this nutrient burn?


#1

This is my first indoor grow with coco. Was wondering if the yellowish colour in the new growth is nutrient burn or just new growth.


#2

Hard to tell from pic but think its new growth. At first they will be lighter in color.


#3

Thanks for the fast reply😉. I’m using flora grow trio and cal mag.
I gave them a diluted dose of cal mag and then a few days later a diluted dose of the flora trio . I flushed just in case and the average was 350 ppm with the water being 80. I’m trying to find a good guide or journal for a coco grow under led but haven’t really found a good one.
With the girls I’ll give them a few days and post an updated pic.


#4

They are to small to feed
Dont start feeding until you have 4-5 nodes
Just ph water till then @Butters
And I agree with @Laurap looks like new growth


#5

Thanks again mate, really appreciate the help.


#6

Wait until they develop their first true node before beginning to feed. You dont want to love your plant too much. It’s not a good habit. When beginning to feed start with around 1/4 recommended dosage and work your way up, if you see leaf tips burning, give less nutrients.
Sometimes new growth will be a lighter color than the rest of the plant. This is normal. Also, you shouldnt need to flush. With Coco, watering till you have around 30% runoff each time will help leech built up salts. Or if you dont do that, you can opt to flush medium out a couple times throughout the grow. As coco is a bit different than soil type mediums, most of what I’ve read said coco should be flushed around 3 times throughout the grow, if not being watered till runoff.


#7

I personally feed full as per mfg recommendations but starting low wont hurt and working up to full is ok


#8

Have you ever heard of a Cal/Mag that’s PPK is neutral? I use a 1.0.0 “Calimagic” or I have to use tap@440 PPM’s on my seedlings. “I guess I could hunt for better tap water”:disappointed_relieved:


#9

Youll be fine using the tap water is it well or city water
Mine is well water at 380 ppm and i use it the entire grow


#10

I’m going to have to use Lime-away to clean cloner after using my tap water. Thanks


#11

1-0-0 is not exactly npk neutral. It’s not 15-0-0 like a calcium nitrate base would be, but it’s still 1% nitrogen. The actual amount of nitrogen in your feed will depend on your dosage. Just don’t feel like because the number in the ratio is low that there’s not a lot of nitrogen in your solution. 1-0-0 is the same as 10-0-0 just different concentration.


#12

Usually Calmag is made from nitrates, which is where the nitrogen comes from. I too have used my tap water and it comes out around 500ppm. The only thing I concern myself with is the chloramines in the water. I add some crushed Asorbic Acid, which is suppose to neutralize the chloramines.


#13

Although I will say I do use a lot of RO water in the mix as well. I don’t like my tap water that’s for sure.


#14

I grow in coco with led @Butters I can tag you to my journal


#15

Awesome ty.