Brown stuff in salt mixing can??

[Reefing.with.Rich]

Just noticed some brown residue inside of the brute can I mix my salt in
Any thoughts?
Always have the lid on so there’s no chance light can get in to start an algae outbreak
0 tds rodi water is used at all times as well
Not sure what this could be

 

[Spare time]

Probably precipitant

 

[Fish Styx]

Just noticed some brown residue inside of the brute can I mix my salt in
Any thoughts?
Always have the lid on so there’s no chance light can get in to start an algae outbreak
0 tds rodi water is used at all times as well
Not sure what this could be

View attachment 3006480

It's just calcium precipitation from your salt mix. Very common actually with certain salt mixes such as reef crystals. Nothing to be worried about.

 

[Uncle99]

Very normal.

Clean bucket when noticed, not anything to worry about.

 

[USCfan]

If you care about this, fitz pro salt and tropic Marin both mix clear and fast.

 

[Subsea]

Bacterial films can grow in he dark.