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Ok, so I'm about to order new bulbs for my outer orbit fixture and can't decide what I want to do. Currently, the fixture has 2x 150w Metal Halide's, 20k, which are new bulbs right before I bought it. I love the color of them, very very white, slight tint of blue. It also has 4 48" t5's with individual reflectors. Right now they are 4 460nm actinics, but I was thinking about only running 1, possibly 2 actinics, as I know actinic bulbs put out very little par. ...
Ok so just a few quick questions as this is my first skimmer. 1. Are skimmers in general meant to always have the foam at the top of the neck or just when there is something to skim? For example when you clean green algae off your glass. 2. Does it matter how deep in the water they sit or is it just a matter of adjusting them to your desired skim rate? 3. Is it better to see large/med bubbles coming out or small bubbles like a frothy foam? Here are some pics ...
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