I have a 210 gal reef tank that is a year old with a 3 to 4 inch sand bed.
Everything seems healthy - rock - coal - fish - inverts however my sand bed has developed a brown/bronze top layer covering about 30% of the sand surface.
Is this something I need to be concerned about?
Should I try to remove it?
Everything seems healthy - rock - coal - fish - inverts however my sand bed has developed a brown/bronze top layer covering about 30% of the sand surface.
Is this something I need to be concerned about?
Should I try to remove it?