HELP! — NEED TO DIAGNOSE DEFICIENCY

[PapiWasabi]

I’m on day 6 of flowering, and my leaves have started to yellow, developing “burnt” tips and some brown spots. Seems like it’s a mobile deficiency since it’s starting from the bottom, but not entirely sure. Using the Athena Pro Line with 5.8 pH water. Any help would be appreciated!

 

[Nixs]

K def. , and a probable mag def.

 

[MyBallzItch]

K and mg are antagonists so DON'T just go throwing more k or calmag unless you're underfeeding. How heavy and what all are you feeding

 

[PadawanWarrior]

I’m on day 6 of flowering, and my leaves have started to yellow, developing “burnt” tips and some brown spots. Seems like it’s a mobile deficiency since it’s starting from the bottom, but not entirely sure. Using the Athena Pro Line with 5.8 pH water. Any help would be appreciated!

Looks like K deficiency. But it could be pH related. Or lockout due to antagonist nutrients like Mg and Ca, like Ball Itcher said. Don't know about your medium and all that.

 

[PapiWasabi]

K and mg are antagonists so DON'T just go throwing more k or calmag unless you're underfeeding. How heavy and what all are you feeding

Growing in Coco with Athena Pro Line (using the recommended amounts w a target of 3.0 EC / 1500 ppm and a pH of 5..

yeah, I agree. Didn’t want to just throw in calmag and call it a day.

 

[PapiWasabi]

Looks like K deficiency. But it could be pH related. Or lockout due to antagonist nutrients like Mg and Ca, like Ball Itcher said. Don't know about your medium and all that.

following the Athena pro line program. We are growing in coco. pH is balanced to 5. 8 each time. Maybe I need to go more alkaline?

 

[PapiWasabi]

K def. , and a probable mag def.

yeah I think so too. Girls just woke up, so gonna do a runoff test. Any advice on how I should correct this lockout issue?

 

[PadawanWarrior]

Growing in Coco with Athena Pro Line (using the recommended amounts w a target of 3.0 EC / 1500 ppm and a pH of 5..

yeah, I agree. Didn’t want to just throw in calmag and call it a day.

Sounds like maybe too much. I don't use that stuff, but I'd do half strength and see how they respond.

 

[GreauxFast]

I would flush with proper PH water for two feedings

 

[Herb & Suds]

I would flush with proper PH water for two feedings

In coco?
WELCOME to RIU

 

[Dape Green]

I’m in coco and I dont go over 700ppm anymore and haven’t seen a deficiency in ages. I’d mix up a batch of nutes around that concentration and run a shit load of it through my pots if I were you.
The antagonistic relationship with certain elements can be a real pain to sort out. That mg-k loop caught me when I used to use a bunch of bottles and tried to push everything hard.