cord

This white film on the cord of my uv sterilizer and other cords in my fish tank, what is it? I'd assume it to be algae. I've had this in freshwater tanks before, I believe. It comes off very easily and feels slimy. Just want to know what it is, is it good or bad, and how to minimize it or get...

I've purchased a DIY Mesh lid kit and I currently have a fluval evo 13.5. I have two koralia pumps so I have two cords coming out of the tank, how should I cut the lid size to allow the cords to go out of the tank? What do people usually do? Do they cut the lid shorter or do they cut a hole...

WTB I want to extend the cable for my MP40, and I rather not pay 60$ to send it to Echotech for an extension. Does anyone have a busted Dryside sitting around? I'm not sure what it would cost me for shipping, but even just cutting the motor off would be fine by me lol I'm having a heck of a...