I have used clear and blue plastic 1/4" line to feed my drippers in a bubbleponics environment. The lines lay atop the cover of the top tank. They are under the lights all the time. They clog up with algae daily. I am trying black lines now but they are so stiff I cant manipulate them or nail them down in a 20 gal plastic Hydro tank. How does anyone else deal with this problem? Is there a better 1/4" line?