Got a problem with algae building up in your clear plastic tubing, restricting flow and causing other issues? Try switching to all black tubing. The clear tubes allow light in, which also allows algae to grow in the line. This algae is usually not an issue, but when it builds up it can restrict water flow and even clog the line entirely. The black tubing, on the other hand, doesn’t allow any light in. Very little, if any algae grows in this tubing. This allows the equipment to run smoothly without the fear of clogging. The downside to black tubing? Well, you obviously cannot see into it. So, if it does become clogged, say with a shell or some other foreign object, you’ll have to cut the tubing to see what’s going on. Fortunately, black tubing is very inexpensive and probably the same price as clear tubing.