Deficiency in flower help

[Johnnysgarden]

I'll start off with my set up. 7x5x10 room with two 1000 led panels, 25c lights on 21c off, 45-50%rh . 2gallon pots growing in gia green living soil. Top dressed 2.5weeks ago with gia green bloom. On day 25 of flower. Bubba's gift clones.
Watering with tap water through a grow rite filter . Comes out at 6.0ph.
Started to notice 2 plants of the 15 starting to develop orange rust spots and yellowing a bit. One plant the leaves started to curl up and cup with yellowing and brown patches on leaves

 

[Emilya Green]

Looks like a magnesium deficiency to me. Supplement with calmag... it is good stuff. Maybe your filter is taking it out of your tap water, and then LED light tends to push plants into needing more of it too, but a magnesium deficiency is pretty common with these plants.

 

[NuttyProfessor]

i say
Phosphorus too much i think

 

[The Celt]

I am inclined to agree with Emilya with a Mg def, which is more often than not actually a lockout due to excessive levels of K, rather than a deficiency. I don’t know the products being used, not familiar with them, but some Cal/Mg will likely correct the issues

 

[NuttyProfessor]

Too much potassium can cause the plant to have “lock out”. This will stop the plant from eating other vital elements, and other deficiencies will soon show cal/mag being one . If not solved quickly, it can have a lasting effect on your harvest.

The Effects of Potassium Excess.
Because Potassium excess will cause lock out of other nutrients, it can be wrongly diagnosed. Look at out for the top leaves growing thin blades. Middle leaves will develop burn around their tips. Flowering will be slow to start, and flower growth will be diminished.

after looking up your topdressing i wouldn't rule it out either its like a pk boost


The Effects of Phosphorus Excess.
Phosphorus Excess can be a difficult problem to diagnose. This is is because too much phosphorus will cause other nutrients to be “locked out”. You will see signs of cal/ Mag deficiency, because the plant can not absorb those nutrients. This will also affect plant growth, and will cause many issues, that will progressively get worse.


GAIA GREEN Power Bloom is a high phosphate fertilizer specifically formulated to support prolific flowering and fruiting.

 

[TorturedSoul]

I'll start off with my set up. 7x5x10 room with two 1000 led panels

Is that enough light for flowering photoperiodic plants in a 35 square foot space? What's the actual wattage of your two LED products?

 

[PE636]

2 gallon pots are awfully small for trying to flower in soil, not saying thats the root cause of your problem but I can't imagine it helping.

 

[Johnnysgarden]

Is that enough light for flowering photoperiodic plants in a 35 square foot space? What's the actual wattage of your two LED products?

I believe it's ample lighting, one is 650w and other is 580w . One is kindxl 1000 and other equinox 1000. Both boast 5x5 veg and 4x4 flower. I've never had both on max in the room or I get light burn issues

 

[Johnnysgarden]

2 gallon pots are awfully small for trying to flower in soil, not saying thats the root cause of your problem but I can't imagine it helping.

That very well could be part of my issue. I usually grow in coco with 5 gallon pots but this run I wanted to experiment.
I cut clones, rooted and put in 4" cup for a week then into 2 gallon a week then flower. They were only about 6-8" tall when I flipped to flower. Now just over 2' tall

 

[PE636]

I mostly grow in coco too so I'm no expert.. I was advised no less than 15 gallons for an effective living soil grow. Hope you get things sorted, good luck!

 

[Johnnysgarden]

Makes sense. Do you recommend maybe feeding them a bit? I do have green planet medione

 

[PE636]

I can't make a valid recommendation on feeding in soil sorry!

 

[Johnnysgarden]

One thing to add. The living soil I'm using is peat moss and coco coir as the medium if that makes any difference

 

[Emilya Green]

One thing to add. The living soil I'm using is peat moss and coco coir as the medium if that makes any difference

That makes a huge difference. Coco is not soil nor is it living. There is nothing in there for the plants. Everything they get will come from you.

 

[PE636]

It's has a peat and coco base plus a ton of other stuff according to the site for the product.. Definitely not just plain coco and peat.

 

[PE636]

Peat moss, perlite, coconut coir, fine bark, composted porcine litter, African night crawler worm castings, glacial rock dust, dolomite lime, feather meal, alfalfa meal, bone meal, rock phosphate, blood meal, fishbone meal, mineralized phosphate, insect frass, mined potassium sulphate, basalt rock dust, humic acid, gypsum, kelp meal, oyster shell flour, greensand.

 

[PE636]

Is that what's on the bag you're using?

 

[Johnnysgarden]

Yes sorry I didn't mention that. I was trying to say the base medium is coco/peat and not soil . Been in the 2 gallon for 5 weeks now

 

[The Celt]

That being the case, leads me back to potassium overload causing Mg lockout.

 

[Johnnysgarden]

How would one go about getting that back into check using pre amended medium