Xenia pulse like mad at night- is this normal?

[esmithiii]

I have two different species that are spreading like mad and pulse like crazy at night. They pulse during the day, but not like at night.

Any ideas as to why?

E

 

[Anonymous]

Mine curl up and go to sleep when it's lights out. They pulse like crazy during the day. HTH

 

[esmithiii]

Mine are curled up by morning, but for the first 3 hours after the lights go out they go nuts.

E

 

[davelin315]

They're afraid of the dark.

I have heard that xenia pulsing is a factor of temperature, pH, and KH/alk, so perhaps when your lights go out and your parameters drop a bit, the xenia are affected and pulse more. Try testing your water before the lights go out, and then testing it again a few hours after they go out and see if any of the parameters have changed.