Need help identifying deficiency or toxicity

Brolociraptor · Mar 5, 2022

Hello everyone I’m having an issue solving a problem that popped up about a week ago, my plants are currently in veg week 3 and I noticed spots on my leaves that look like a cal mag deficiency. Any possible solutions are appreciated.
Royal Gold Tupur
Lotus nutrients(Grow)
Supplements: botanicare cal mag(5ml/gal), root excelerator gold(1ml/gal), power SI(.5ml/gal), H&G amino treatment(.8ml/gal), Recharge(once every 10 days, 1/2 TSP/gal)
Ph 5.8-6.0
Ec: currently 2.0 feed-ins, feed-flush, run offs usually come out to 1.6-2.0
Chilled Growcraft x6 1000W, par average around 400
Environment: 80-82F, 65-70 RH, .8-1.1VPD
Photo taken right after a feed, they don’t sit in water for long

jguit · Mar 5, 2022

It sounds like you're doing mostly everything right. EC is possibly on the high side at first glance but i'm not familiar with Lotus fertilizer or the additives you are using. Knee jerk would be to say a K issue.

I have to ask, is this your first grow? I only ask because you are adding a lot of stuff to your feed and we have no idea what's worked for you before in the past.

Also, maybe raise the light until you get it figured out since your plants aren't in terrible shape overall. What are you measuring ppfd with? a legit PAR meter or some sort of phone app?

jamk911 · Mar 5, 2022

Oddly enough its overwatering symptoms I see..
I had that exact same bronzing on leaves early in veg one time.. it ended up being overwatering + ph too high.
But I have also seen it from wind burn as well

growsince79 · Mar 5, 2022

jamk911 said:
Oddly enough its overwatering symptoms I see..
I had that exact same bronzing on leaves early in veg one time.. it ended up being overwatering + ph too high.
But I have also seen it from wind burn as well

^^^^ Agree^^^^

Brolociraptor · Mar 5, 2022

jguit said:
It sounds like you're doing mostly everything right. EC is possibly on the high side at first glance but i'm not familiar with Lotus fertilizer or the additives you are using. Knee jerk would be to say a K issue.

I have to ask, is this your first grow? I only ask because you are adding a lot of stuff to your feed and we have no idea what's worked for you before in the past.

Also, maybe raise the light until you get it figured out since your plants aren't in terrible shape overall. What are you measuring ppfd with? a legit PAR meter or some sort of phone app?

Not my first grow I’ve been growing for about 2 years now, but it’s my first coco grow. I use a lot of stuff we use at work which have given us insanely good results, could be different for a home grow of course. I don’t add them all into every feed except the cal mag and root excel but I stop using that at about week 4-5 in veg. I’ll try a more simple formula for a while and see how that works. I use a photobio par meter and I’m going to borrow an apogee meter from work and see if it’s accurate.

Brolociraptor · Mar 5, 2022

jamk911 said:
Oddly enough its overwatering symptoms I see..
I had that exact same bronzing on leaves early in veg one time.. it ended up being overwatering + ph too high.
But I have also seen it from wind burn as well

Yeah I’ve read that tupur can be fed up to 7 times in a day so I wouldn’t think I can overwater it and I’ve always heard you can never over water coco but is is my first coco grow. it does stay wet always and there is algae growing on my top layer so I can try watering less because I would assume that’s an issue. I’ve been watering every other day thus far but I also have been watering in the last 3 hours of the light schedule due to my work schedule. I’ll just have to wake up at 2 am and water then so I’m not watering before lights out. Thank you!

jguit · Mar 5, 2022

2 EC feed sounds a little bit high for the size of those plants.

Watering every other day doesn't seem that unreasonable but pot size would defintely make a difference in the frequency. What size pots are you in?

Brolociraptor · Mar 5, 2022

jguit said:
2 EC feed sounds a little bit high for the size of those plants.

Watering every other day doesn't seem that unreasonable but pot size would defintely make a difference in the frequency. What size pots are you in?

5 gal fabric pots

jguit · Mar 5, 2022

5 gal fabric pots

Looks can be deceiving! Ha.

Yea, you'd probably want to let those dry out a bit more.

This is a great thread about watering coco.

HOW TO WATER COCO FOR BEST RESULTS.

Ok writing this cause i see this issue often and rather have a thread to link than explain this each time. This is not my work but a collection of info from many members here and I have put into practice myself. So first off COCO is NOT soil. For best results we want to keep it saturated...

www.thcfarmer.com

Brolociraptor · Mar 5, 2022

jguit said:
Looks can be deceiving! Ha.

Yea, you'd probably want to let those dry out a bit more.

This is a great thread about watering coco.

HOW TO WATER COCO FOR BEST RESULTS.

Ok writing this cause i see this issue often and rather have a thread to link than explain this each time. This is not my work but a collection of info from many members here and I have put into practice myself. So first off COCO is NOT soil. For best results we want to keep it saturated...

www.thcfarmer.com

Thank you so much!

Need help identifying deficiency or toxicity

Need help identifying deficiency or toxicity

Brolociraptor

jguit

jamk911

growsince79

Brolociraptor

Brolociraptor

jguit

Brolociraptor

jguit

HOW TO WATER COCO FOR BEST RESULTS.

Brolociraptor

HOW TO WATER COCO FOR BEST RESULTS.

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