My tubing to the inlet and outlet bars are real gunky and I think I want to replace instead of cleaning them...the plastic tubing is cheap enough..why mess with it. The only problem is I don't remember what the inside diameter of the tubing is. Anyone here know? Measuring the ourside of the tubing ...

:( She's still not doing well. She is hanging on the back wall of the q-tank and ignoring her favorite algae wafers. SHe may have nibbled a little zuchini but not much...since Monday. The area on her back is no longer white and appears smaller.
Does anyone know why she's not eating? Any ideas to ...

It's not just you....I'm about to have DT's
I figured it would be back on after the first of the month.

:( I have a starlight bristlenose pleco. I've had her since May and she's done fine, even over an outbreak of ICH and treatment with salt..all the fish did fine, and that's been over for a good 6 weeks..maybe more. I noticed she wasn't as active a couple of days ago, and her color was really dark ...