Fungus gnat damage?

[UberPooner]

Medium-Rockwool cubes
Genetics- Royal Queen Critical AUTO
Day- +-50
Nutes- Veg+bloom(for RO) and Shine

What do you guys think this damage is from?
It has to be an immobile nute if it is a nute since the bottom leafs are fine.
This kind of looked like cal/mag damage however ive been feeding them with veg+bloom nutes for RO and im using RO. It should cover the cal/mag.
Then I looked up fungus gnat damage and it kind of looked like this.

I plan to use azamax to try and kill any root living larva.

What do you guys think it is?



Thanks

 

[mdgg4]

Why would you say fungus gnats? Have you seen any? Don't just assume.
But to me it does look like calcium
Maybe try 1 feed with tap see how they do, have'nt dealt with v+b so don't know if that will fuck shit up ya know. Would seek dansbuds out, all he runs one of first on this site, check him out.

PEACE!

 

[UberPooner]

sorry I should have said I see some dead gnats on the ground. and see some flying around my house.

also when I googled 'fungus gnat damage' the top pics looked like what I had.

Also its affecting 2/4 plants that are on the same feed schedule so that made me feel like gnat vs deficiency.

if my target ppm is 900 without calmag, do I target 900 total ppm again with calmag included. or use the ppm with calmag as a base then put nutes to 900?

Thanks

 

[UberPooner]

Guys, I think its a cal/mag issue now.....

for my nutes, I got the RO version. however it says make sure my water is .3 ec(200ppmx5) before I start adding food. They suggest adding tap water until it gets to those levels.

I used my water strait from RO system wich is 40ppm.

Do you think I can use cal/mag to get my ppm to the base 200? or should I use tap water?