Dawg_walker
Member
Magnesium deficient?
- Thread starter Dawg_walker
- Start date
hotrodharley
Well-Known Member
Likely. They sure look good. Are you giving cal mag in some way?
Dawg_walker
Member
Growing in coco and using tap water with a ppm of 70. Started adding Epsom salt at 1 teaspoon per gallon 3 days ago. Never had an issue in the past with magnesium but it does look like a mag problem to me. Any idea how long till I'd see them boounce back if it is a mag deficiency?
hotrodharley
Well-Known Member
Foliar s
Foliar spray works quickly. You'll see improvement quickly.
Dawg_walker
Member
Really? If you look closely, zoom in on the leaves in the back. Yellowing and just a general wilted look to them. They're growing really slowly as well. The leaves are starting to curl, too. I grew this same strain in foxfarm soil and they were twice this size at this stage and really nice green. These are looking sad. I'm almost sure its magnesium. I'll know in about a week I guess.
Bernie420
Well-Known Member
so growing in coco and adding just tap water and recently added magnesium and thats it nothing else?
Bernie420
Well-Known Member
the pic in the thumbnail [not the full size one] the back upper right leaf. I would vote that as an iron deficiency maybe idk. they look a little overwatered but your in coco so I doubt that is an issue.
the leaf twist could be a ph issue, serrated edges hint to a heat problem I think. I have serrated edges and my room is 92 right now.
you grew this in ff before so what are you in now? What microbe product are you adding?
Dawg_walker
Member
I'm using the Lucas formula with floralicious and Rapid Start root enhancer. PH is at 5.8 and ppm's are around 900 (Though much higher now due to the addition of Epsom salt). Did a foliar spray this morning and watered with Epsom salt and they actually do look a little better this evening. Not sure where the mag deficiency starts. I'll know if that's it in a few days but im thinking it is.
Bernie420
Well-Known Member
Right on one thing you can do is take a good picture of a leaf and then take a pic of the same leaf later on then you can compare them on the putor side by side to see the improvement instead of trying to remember what it looked like.
polishpollack
Well-Known Member
dawg walker, what soil are you growing in? if it has ferts in it, you don't need to give much else. if it's ocean forest, there is fert in it already.
900 ppm is a hydro fert level, used because hydro is nothing but water and nutrients, which means there's a high dilution to hydro so you use a lot of fert. You don't use 900 ppm in a soil grow. that's too much.
You also have leaf edges that are turning upward, indicating the air temp in that space is a little too warm. You've put a lot of plants in a small space. If they grow right, they will get too big for this space.
What light are you using and what is the air temp like?
There's no sign of mag def that I can see. This problem shows up as golden-yellow spotting in between the leaf veins. I don't see that here.
I wonder if you're watering too often too. I'd plant on transplanting soon to much bigger containers, use ocean forest soil and add nothing else unless you're sure you have too. The soil has nutrients already. You want a small fan in there to remove heat and move air in and out. You might have to get rid of a plant or two, to make space for the rest.
900 ppm is a hydro fert level, used because hydro is nothing but water and nutrients, which means there's a high dilution to hydro so you use a lot of fert. You don't use 900 ppm in a soil grow. that's too much.
You also have leaf edges that are turning upward, indicating the air temp in that space is a little too warm. You've put a lot of plants in a small space. If they grow right, they will get too big for this space.
What light are you using and what is the air temp like?
There's no sign of mag def that I can see. This problem shows up as golden-yellow spotting in between the leaf veins. I don't see that here.
I wonder if you're watering too often too. I'd plant on transplanting soon to much bigger containers, use ocean forest soil and add nothing else unless you're sure you have too. The soil has nutrients already. You want a small fan in there to remove heat and move air in and out. You might have to get rid of a plant or two, to make space for the rest.
Dawg_walker
Member
I have multiple tents, so space isn't a factor. I'm growing in Coco so nutes are a must. My temps are 76 during lights on and about 68 with lights out. I have clip on fans for air circulation and an air cooled hood with a 6 inch 450cfm fan. It's refreshing the air in the tent 4x a minute. I'm vegging with a 600 watt MH. I just transplanted two from 1 gallon pots to 3 gallon pots yesterday and the smaller 3 will be going into my other tent when these get flipped. Just keeping it all together for ease at the moment. I'm almost thinking I may have been letting them get too dry between waterings. Picked up some Cal mag yesterday to try and see if that changes anything. I'm just stumped on the pale green color they are and super slow growth. Never had these problems in the past with Coco but it's been years. Have been using soil but switched back to Coco because I get bigger yeilds.
Bernie420
Well-Known Member
pale green color = mag super slow growth = nitrogen, medium too hot, weak light/wpectrum the calmag would help microbes would help hrh said a foliar spray so a kelp and fulvic acid would help.
polishpollack
Well-Known Member
How can you get bigger yields in coco if you haven't used it in years? If you had better success in soil, I'd go back to it. If you really want the best growth, use DWC.
Dawg_walker
Member
I haven't used Coco in years because I wasn't growing for a few years. Now that I am again, I had started in soil for my first run and now I'm back to Coco. Yes, much bigger yeilds in Coco. At any rate, I e upped the waterings to twice aday and added calmag to the mix and they have bounced back. Looking good now.
