I’m using Advanced nutrients, the master line. I also add some extra microbes and use their carboload as well.

This is the first full run on it, I had to switch brands slightly into flower last grow.

I believe the staining would come from humic acid, seaweed extracts and pumic(?). In hydro and especially aero you want to avoid some stuff over others. In aero you want to avoid humic specifically as it will clog the aerosolizers.

For what it’s worth, you can see some red build up starting on the pvc joint, so it’s not perfect either, but that’s what the sensizym and microbes are for, eats the bad stuff and makes good stuff.

Edit, and sorry the ph perfect 3 part base part.

Shouldn’t it be called broth, in the context of ramen? 😋