Quote:
Originally Posted by chi
Switching back to t5's as LEDs can't truly provide sufficient UV. You can tell that there's no UV sterilizers that uses LED for our hobby. Nor UV tanning salons. That being said. The photons emitted via electricity through gas medium produces a much more even spread. I noticed that my anemones have much better colouration under t5's.
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They make LEDs for sterilization and tanning beds so I'm not what your assumptions are based on. It's all fairly new technology so certainly not the most common yet but options are available if you care to look. Most LED fixtures these days also have LEDs that produce light in the UV range so I don't believe there's much advantage using other light sources over LED for the sole purpose of providing more UV.
At any rate I think all lighting options have draw backs. T5 only tanks look amazing in pictures due to the even light distribution but IMO look flat in person and lack contrast. Halides on the other hand go too far in the other direction and lack the ability to evenly light a tank and bring good light and color to all corals and areas. The combination of the two however gives you best of both. LEDs are no different and will lack certain things when used solely, however out of the three they are best on their own IMO, provided you use the right fixture. That said supplementing with T5s will obviously produce better results but often won't be worth the effort for most people.