2Hr Aquarist Commentary: The Twinstar S series works well for smaller sized tanks. The S series has an attractive spectrum, which is rare in the LED world, and sleek build. I also like that they do not have fans, which is another weak point in many light fixtures. The fixtures are slightly broader than thinner fixtures, but I find that this actually gives better spread in a tank. I think single fixtures work well for smaller standard sized tanks. For 3ft (90x45x45cm) tanks and above, I would recommend having 2 fixtures.
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