should I be concerned?

[btymens]

Originally Posted by Aquattro

What kind of lighting, and have you changed the bulbs lately? Have you measured your nutrients? Anything missing in the tank? I'd say ya, be a bit concerned. Not emergency stuff, but you want to get on top of this.

I have the standard t5 lights and the bulbs were replaced about 2 months ago. everything measures ok so thats why I little concerend