Help with sick plant

[arquette]

I have a sick Cream Mandarine. Forty seven days from seed second week of flowering. Roots organic with Natures Living Soil. So far water only. I have included a photo of the plant. The leaf disorder has happened quickly. I am thinking it is nitrogen related. There is also a WW XXl in the tent that appears to be starting to get the same thing. Any help appreciated.

 

[Arthur]

We need more info to help here. There is a form at the top of the infirmary, fill that out and we can figure it out. Looks like calcium deficiency... but what is the cause? Is it deficient? Or is it locked out? This is where the other info comes in.

 

[arquette]

We need more info to help here. There is a form at the top of the infirmary, fill that out and we can figure it out. Looks like calcium deficiency... but what is the cause? Is it deficient? Or is it locked out? This is where the other info comes in.

I am unable to get the form to work.

 

[Arthur]

Copy and paste.

Problem:

Medium/grow method:

Feed: and supplements used:

water source:

Strain/age:

light used:

Climate:

Additional info:

 

[arquette]

Problem:Leaf disorder

Medium/grow method:Roots Organic with Natures Living Soil

Feed: and supplements used: water only

water source:well

Strain/age: Cream Mandarine, 47 days from seed, second week of flowering

light used:MarsHydro 700- 350 watt equavilent 18/6

Climate: TEMP 70 -75 HUMIDITY 40-50%

Additional info: Whatever is going on has happened within the past week

 

[MMMi]

Looks like classic magnesium def. I'm looking into using LOS myself and from what i've found -- those amazon mixes run out around week 5-6. I'll defer to the organic gurus but some epsom salt and top dressing may be in your future.

 

[arquette]

The first two photos are sick Cream Mandarine. The second two photos are WW XXl . Both are grown in same medium and Natures Living Soil. The WW seems to be getting the same problem, just not as fast.

 

[Arthur]

Under led, calcium & magnesium needs go up, I don't see it in your schedule, very possible you've exhausted the soil supply. Or, your soil pH has slid south of 6.5, making uptake of those nutrients difficult.

 

[arquette]

Thank you Arthur. I have some OAC calmag. Should I give them a heavy dose?

 

[Arthur]

If you don't have the capability to check pH, I would. But get the equipment to test your medium pH. If it's due to lock out ( the overall slump of the plant) from low pH, won't matter how much you give them.

Either a probe or slurry test with a pH meter to get those #s. That way, you can either amend the soil to raise the pH, or feed at higher ph to raise over time... but without a starting point...