I have switched all of my tubing to black spiral corrugated pond tubing. No light = no algae... and if it is there I don't see it. What I really like about the black spiral pond tubing is that it doesn't kink! I will never go back to vinyl tubing
http://www.homedepot.com/webapp/cat...=None&Ntpr=1&Ntpc=1&selectedCatgry=SEARCH+ALL
http://www.homedepot.com/webapp/cat...=None&Ntpr=1&Ntpc=1&selectedCatgry=SEARCH+ALL