Toxicity/deficiency?

[perm1226]

So, since finding this site I’ve found everyone is insanely helpful, and I do appreciate it!

first indoor grow and I’m here for a little advice.

-day 61
-FOFF 70/30 perlite
-Mars Hydro ts1000
-Humidity %55
-Temp 78

•••I have been adding 7ml bloom 6ml growth and 6ml micro to a 1 gallon container of water and have been giving each pot a half gallon to feed•••

What toxicity or deficiency am I dealing with?
Should I just use regular water for a little?

Thank you so much fellow growmies!!

 

[MedCzech]

Looks to be clear phosphorus deficiency to me.

 

[perm1226]

Looks to be clear phosphorus deficiency to me.

Thanks for the reply, what’s the best way to approach this?

 

[MedCzech]

How to fix Cannabis Phosphorus Deficiency (P) Pics & Symptoms

Phosphorus deficiencies cause dark splotches on leaves and can appear at the bottom of the plant on some of the oldest leaves. Learn to spot & fix the issue.

www.growweedeasy.com

check out this article. Could be ph or temp, maybe just running low on Phosphorus and/or calcium as they interact together.

 

[PeaceLove&Buds]

This happened to me and I discovered my ph pen wasnt calibrated and my ph was too low which in turn was apparently preventing the roots from properly gathering the crap it needs. It didn’t disappear from the leaves, but stopped producing leaves with spots. Ironically it was the “pool kit” that saved me for a while. Yellow is mellow haha

 

[tronN00dles]

Are you following the feedchart and are you measuring ppm/EC?

 

[perm1226]

C

Are you following the feedchart and are you measuring ppm/EC?

Could you link me to a proper one please?

 

[perm1226]

I

Are you following the feedchart and are you measuring ppm/EC?

can only really find ones for photo period plants

 

[tronN00dles]

I

can only really find ones for photo period plants

For autos, still follow the feedchart when it comes to the relative ratios but dilute the mix to 1.0-1.2ec. So if full strength is 3.0ec, just dilute to 33-40% or so for that week. Not sure if the AN feedcharts show full strength ppm/EC. If they don’t, you’ll need a ppm/TDS pen.