Originally Posted by AaronW
Are they necessary? What benefits to the fish/environment does it have? I have a 10 gallon community tank with a HOB
filter. Would this create too much current for the fish I have?
Yes and No .... Opinions on this are varied and has had some debate.
Personally ... I find it a valuable part of an aquarium in helping promote gas exchange. Filter that provides surface agitation will be your primary gas exchange. The issue is when your filter dies on you while your on a long vacation and there's nothing to agitate the surface. In this case, I think the sensible thing is to have one on hand since it's not an expensive investment ... and put it in your tank during those vacations / long weekends or as an emergency backup.
I've honestly considered removing mine since the look of the bubbles are starting to getting a bit annoying, but one of my Bamboo has decided to park itself on the tubing or the air-stone itself so it stays.
75g Planted Barbs Denison, BlackRuby, Tiger, Albino Tiger, Green Tiger, Cherry, Gold, Checkered, Odessa.
NonBarbs Cardinal, Neon, RummyNose, Bloodfin Tetras, Z. Danios. 1RTS. Amano, Bamboo, Ghost & RCS. 20g Long Shrimp Tank RCS, Tiger, Amano.