stubborn defiency

Hey Fellers,
Been dealing with this problem for about a month/6 weeks now. Thought i had it beat then when i flipped into flower at the beginning of last week it came back with a vengence. my first thought was nitrogen, and second was potassium but apparently i was wrong. Grown in fox farm happy frog, The room is outfitted with HLG 550 v2 r spec, fed GH full line with recharge, with botanicare cal mag. please help fix this as soon ad possible.

No pics...

thats really weird i uploaded pics in the original post

Why do you feel you were wrong on questioning your N and K values? Where is your pH, both in and out?

Need to know your pH

ph is 6.5 in everytime and last reading was 2 days ago and was 6.1 runoff. will feed today and get you an updated runoff

What is the E.C of your nutrient solution?

i never tested ec. i can tell you the last ppm was about 780. i can get you ec later today

viper564 said:

i never tested ec. i can tell you the last ppm was about 780. i can get you ec later today

Click to expand...

You can convert over. You were either taking that 780 reading on a x500 or a x700 scale. Either way you seem to be fine in terms of concentration. At this point in veg I would be using a 3-1-1-2 ratio in terms of FloraGro:Micro:Bloom:CalMag

they got switched to flower a little bit ago. but i was running 3 micro 3 gro 1 bloom 2.25 cal mag. so 5 mg of micro 5 mg gro 1.5 mg bloom 4 mg calmag

In flower I just swap the Gro with more Bloom

i know but have to fix problem before it gets too far along

just a thought, could it be rootbound?

.... this a potassium issue ... burned serrated edges ( may look like nute burn ) , yellowing.

IMO would run a full “ regular “ veg feed on this plant to load it for transition. It’s having issues with a feed imbalance , often from running “ bloom “ Nutes TOO EARLY. Happy Frog is prebuffered to 6.3 - as long as you are 6.5 / 6.7 ( allowing for drift ) going in , then you are fine.

There will be ZERO REASON to check runoff with this medium .... everytime you overwater container to point of collecting “ runoff “ you begin to LEACH the medium . I use GH ( not bottles ) but MAXIBLOOM powder. I shoot for 700 - 1000 ppm for late veg / transition to allow plant to store enough for the impending stretch period. Yours seem a bit light on feed. Lack of nitro too.

Bloom use would be better suited to After stretch .... final branching / budset have stopped or slowed THEN it’s officially flowering since it has changed gears to the flowers .