new dr green thumb
Member
Running in Coco about 3-4 weeks old plant was healthy prior to feeding 24hrs ago. 700ppm and 1.5 EC PH 5.9 fed until some run off...Running with Canna Nutes ...Seems to be mainly on Old Growth Any help would be appreciated
Problem after feeding
- Thread starter new dr green thumb
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Bernie420
Well-Known Member
Looks like it might be cal deficient to me.
new dr green thumb
Member
Yeah wishing I went back to what worked in the past with DWC
new dr green thumb
Member
I use 5ML per gal of cal mag with canna coco nutes already. What a pain in the ass this coco is.
ToFarGone
Well-Known Member
Why didn’t you stick with dwc?
new dr green thumb
Member
We lose power here often thought coco would be a little more forgiving if I did, also thought humidity in my basement tent would be easier to control.
CannaCountry
Well-Known Member
Coco loves Ca and Mg, which is why so many have issues using it. Proper rinsing and buffering of your coco, as well as additions such as Epsom Salt and CaNi solve these issues. Good luck friend.
xtsho
Well-Known Member
Coco is easy. I've been growing with it for years with great success. I don't use calmag either. The key is to use a nutrient that already has adequate amounts of calcium. What I use has calcium nitrate as the main nitrogen source. You'll find that many of the less expensive hydro nutrients do that. The designer nutrients don't have enough calcium in them on purpose so they can sell you another bottle of stuff. Another thing with coco is that less is better. The feed charts for many nutrients have people overfeeding. As odd as it sounds, overfeeding can cause nutrient deficiencies.
To grow successfully in coco all you need for nutrients is calcium nitrate, a micronutrient blend, and maybe some MKP depending on the P/K amounts in the micronutrient. Any decent micronutrient blend will already contain adequate amounts of magnesium and the calcium nitrate will supply all the necessary calcium. It doesn't make sense that a nutrient line supposedly developed for growing in coco would need to be supplemented with additional calcium or magnesium.
new dr green thumb
Member
Canna with RO water needs Cal / Mag supplement ... they assume the tap is coming out at .4 EC with Calcium and Magnesium naturally occurring in the .4 . You think I’m over doing the nutes ?
new dr green thumb
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new dr green thumb
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What nutrients do you have success with Coco ?
MrGreenFingers99
Well-Known Member
On all my grows the first couple sets of leaves always get a bit rough looking like that, new growth looks pretty good to me but I can see just a little tip burn, I would measure the PH and EC going in and then measure the the PH and EC coming out (runoff), if EC is alot higher coming out then you are over feeding etc.
new dr green thumb
Member
Ok thanks, my EC is coming out at 1.8 and pH of 6
MrGreenFingers99
Well-Known Member
Ok, i think you said going in was 700ppm so 1.4 - I would back off a bit on the base nutes and feed around 500ppm 1.0 EC with PH at 5.8 - your PH is fine but you dont want it rising to much in Coco try keeping between 5.8 - 6.2 - make sure your using Calmag as well in coco
xtsho
Well-Known Member
It doesn't matter what I think but it looks like the plant thinks you're overdoing the nutes.
I just use some cheap nutes called VitaGrow. It's just three parts, calcium nitrate, a micronutient blend, and monopotassium phosphate. I have been using them for years. I used to use the fancy bottled nutes but When I was doing flood and drain and replacing multiple reservoirs every two weeks the cost was just getting ridiculous. I was at the local hydro store many years ago and noticed these inexpensive nutes they packaged themselves so I tried them. The first run was so much better than anything before that I have never looked back. I went through many of the name brands and was actually shocked to realize that these cheap nutes worked better than those costing up to ten times as much. It was then that I realized what a ripoff the cannabis specific nutrient is and I've been telling people ever since.