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.
Hard to tell from pic but think its new growth. At first they will be lighter in color.
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.
Thanks again mate, really appreciate the help.
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.
I personally feed full as per mfg recommendations but starting low wont hurt and working up to full is ok
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”
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
I’m going to have to use Lime-away to clean cloner after using my tap water. Thanks
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.
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.
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.