Why does my heater look like this?

LHAquatics


image.jpg
Its still pretty new
 

carsonsgjs

Just looks like algae to me. It can grow on heaters just as it can grow on the tank glass.
 

coralbandit

See if it wipes off.
Looks like algae IMO also but I would see.
 

ticojpunk

mine recently looked brownish inside and it turned out water got inside it.
 

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