Are these diatoms?

[reef344]

Do these look like diatoms? Should I clean it off the glass?

 

[landlubber]

If the tank is as new as your start date then it likely is diatoms. If the system is older than a few months then you're dealing with a different circumstance.

 

[reef344]

If the tank is as new as your start date then it likely is diatoms. If the system is older than a few months then you're dealing with a different circumstance.

Tanks only about 6 weeks old

 

[landlubber]

Tanks only about 6 weeks old

no worries at all then and they'll soon pass.