Hey everyone, as you can see I'm havin a little trouble discerning whether or not my Duncan is in good shape. I'm not quite sure what a normal Duncan's behavior is but lately it's been randomly closing it's heads and doesn't look quite as peppy. My parameters are all in check with the exception of my nitrates a little higher than wanted at around 10, temp 79, Duncan placement: mid tank, mid/ light flow and stock biocube lighting. Here are some pictures and I would just like some confirmation on how this Duncan is doing thanks!
A week ago....
Today....
A week ago....
Today....