Growth or precipitation?

[yamrvi3]

Hello All,

I have some substance occurring in my SIP (octopot). Running sunshine #4 with extra perlite, jack's 3-2-1 and h2o2 or bleach to sterilize.

Below is a photo of the galvanized steel fencing that is used as the pot structure, and you can see some white/yellow substance. Does this look like typical growth or some sort of chemical precipitation from the zinc involved with the galvanizing process? I assume growth of some sort.

Thoughts?


-YV

 

[Creeperpark]

Hello All,

I have some substance occurring in my SIP (octopot). Running sunshine #4 with extra perlite, jack's 3-2-1 and h2o2 or bleach to sterilize.

Below is a photo of the galvanized steel fencing that is used as the pot structure, and you can see some white/yellow substance. Does this look like typical growth or some sort of chemical precipitation from the zinc involved with the galvanizing process? I assume growth of some sort.

View attachment 19064206

Thoughts?


-YV

That's probably just excess salts reacting with the metal from the discharge. One of the problems with putting pots on sidewalks is the discharge can stain the concrete. Sometimes the stains are permanent so one has to be careful with plants around pools.

 

[yamrvi3]

Thanks Creeperpark - appreciate the insight.

 

[Dime]

Looks like rust

 

[yamrvi3]

Looks like rust

I see the rust on the fencing itself, but do you think the white material at the bottom is a sort of oxidation?

 

[Dime]

Yes,white rust.

 

[Dime]

I dunno what that is on the bottom ,maybe a reaction with the cement but the white and red on the steel is rust

 

[yamrvi3]

Yes,white rust.

Makes sense, maybe ZnO. Thanks, Dime.