Rust-color on Prime Agra
Hi,
Two of my orchids had a "whitish" fertilizer buildup on the Prime Agra surface, so I just finished going through the process of unpotting and cleaning the LECA (boiling, etc.). I also have another plant with some "rusty-color" surface Prime Agra (pic attached). Can somone tell me what this is, please? Is it a fertilizer build up, as well? If not, what? Is there something that I should do to remove it (if poss.), or is it normal and ok?
I would appreciate your advice,
Vicki
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