Cal-mag or Rust Fungus

Hello Folks,

I’m new to this..

Had a bit of an over watering issue which then brought me fungus gnats.

I treated with neem and Lost Coast plant therapy and now I have this rust on handful of plants.

it’s not powdery and doesn’t rub of so not sure what I’m dealing with.

Any insight would be appreciated!

Are you using GH by any chance?

The plants are 3 weeks old in 1 gallons in living soil under an HLG 600 getting straight water with a ph of 6.4 .They have only had neem and plant therapy sprayed.

Only reason why I asked is I've been getting those brown spots on my led side of the grow that's being fed with GH base. It happened last grow when the room was fun 1k de hps. I'm speculating that GH base is inconsistent because this is also happening to some other people too. As for you try putting cal-mag if you haven't already. I noticed the LED side of the grows want more cal-mag dunno why

Copy that. I appreciate the reply!

007Raygun said:

The plants are 3 weeks old in 1 gallons in living soil under an HLG 600 getting straight water with a ph of 6.4 .They have only had neem and plant therapy sprayed.

Click to expand...

Are you adding pH down?Living soil will have its own pH buffers,your spots show a Ca deficiency could be too low of pH.My soil i water with 7.2 ish water.
Was there any ph buffers added to the soil?

No buffers have been added...