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i do not suggest using an airstone in a salt water system. because of the amount of dissolved organic material the bubbles will bind this material to the bubbles, actually making them less likely to help in gas exchange. this binding process also creates a film on the tanks surface. this is how protein skimmers work. running an airstone in the system would be turning the entire display into a protein skimmer. actually creating more problems then solving.
G~
G~
