it takes water from the very top of the tank so you dont get a protien skin on top of your tank. I never really got one on my nano-cube until it was about 7 months old, then it would appear a few days after a water change.
I got a surface skimming attachment for it and never have had a film again. it was worth every penny
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.