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  1. StevenA

    Defective tubes?

    When the tubes are blackened at the end, I assume this means they no longer work?
  2. StevenA

    Height of lights

    Hi all i have a Fluval Osaka 260 which has overtank lighting which is fixed to a bracket secured to the back of the cabinet. My question is this, is there an ideal height for the lights above the water surface? On my last setup, a Rio 180, the luminaire was about 6 inches above the surface...
  3. StevenA

    What tubes?

    Hi all, i have a 100cm overtank luminaire that i wish to replace the tubes in. It has 3x 39w T5's in it, and i think they are standard daylight tubes. I want to promote better plant growth, so should i buy 3 Grolux tubes or 2 Grolux and a new daylight tube or another combination? The site i use...
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