Whats wrong with my duncans?

[Matthew40b]

Hey everyone, I have had these duncans for a few months now and up until about a week or two ago they wont open up all the way and its color is off. Does anyone know whats happening? Thanks.

 

[Dustinc1983]

I guess Duncan’s can get cranky ... I’ve had it happen a couple times. No changes to flow, light, parameters, critters?

 

[xxkenny90xx]

Yeah duncans can be cranky. All my other lps will be doing great but occasionally the duncans will shrivel up for a bit. Still, I'd check your parameters

 

[The Aquatic Arsenal]

I agree with checking your parameters. I have had a Duncan close up for a month before. It now has something like 8 new heads.