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  1. A

    Spray bar or nozzles?

    Thanks for the nice article. Yeah a lot of people new to the hobby make the mistake of thinking that an airstone pumps o2 into the aquarium when in fact it is all just about agitating the surface to get better gas exchange. The pre-filter is certainly an idea, it might reduce the flow of the...
  2. A

    Spray bar or nozzles?

    I have a Fluval 306 (in a 110l tank) and changed from the duck beak nozzle to a spray bar to get better surface agitation as well as better circulation. My tank develops nasty brown string like Algae as soon as the circulation takes a dive. I currently have the problem where as the filter's...
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