Strange graying on topsoil

[spunion]

I'm getting this hazy gray on the top of my coco. I have no idea what could be causing this, but I'm new to coco.

The third pic shows a plant without the gray. It gets washed away when I water, but slowly creeps back it seems.

 

[caredrivensf]

wht kind of coco. thts looks weird I would transplant into different coco if possible

 

[spunion]

Its coco coir fiber.

The ones that have the dusty surface seem to only be the plants I got from a friend. I'll ask him about it.

 

[aggrowman]

What kind of water do you use? If your using hard tap water, it could be mineral deposits.

 

[thatonedude]

mineral deposits or some kind of fungal growth. if you rub it do you get a powdery deposit on your finger?

 

[spunion]

I am not sure if its hard water, multi-fam housing, but its very possible. Old building.

The plants seem pretty healthy. They're all perfectly green, however some node growth seems slow while others are stretchy.

 

[br26]

mycorrh overgrowth? looka lika fuzz when a ton of cfus of beneficials explode!

 

[xxxstr8edgexxx]

you sure its not bone meal. when i use bone meal i get agrey or white crust on top where it kinda filters out as the water seeps in leaving the larger particle in suspesion on the surface.

 

[Scrappy-doo]

Ill get that sometimes when either my airflow, temps, or lighting are not ideal, It's mold. You can scoop off the top layer of coco and add some more fresh coco. If your pots werent so full already you coulda just put some fresh coco on top to kill it. It usually is just on the very top. Just swap it with fresh coco or transplant so its covered that will kill it. But if you dont fix the environment it will come back.

For me it only happens in the veg room if it isnt dialed not in the flower room cause theres always plenty of light, heat, and airflow in there.

 

[DemonTrich]

I get that on my soil grows. iirc, from reading its the myco/bennies.

 

[spunion]

Ill get that sometimes when either my airflow, temps, or lighting are not ideal, It's mold. You can scoop off the top layer of coco and add some more fresh coco. If your pots werent so full already you coulda just put some fresh coco on top to kill it. It usually is just on the very top. Just swap it with fresh coco or transplant so its covered that will kill it. But if you dont fix the environment it will come back.

For me it only happens in the veg room if it isnt dialed not in the flower room cause theres always plenty of light, heat, and airflow in there.

I'm actually pretty sure this is the case. I've been slacking on getting some actual ventilation going.

I'll have to get a fan setup and dig out and replace the surface coir asap. I may use perlite or diamtomaceous earth for the surface.

 

[Scrappy-doo]

Yeah if you don't do anything it doesn't usually go away on it's own even after you fix the environment that's why I'll usually cover/smother it or transplant. There's been times I didn't do anything just left it alone. Didn't seem to negatively affect the plants, but obviously better to not be on there and it's an eye sore to look at. Easy to fix though.