Gorgonians are non-photosynthetic, so dont need MH's. PCs all but limit you in choice of future livestock. Ive mentioned a couple of times to people setting up, once your comfortable with keeping marine, you'll wanna keep different species, including SPS and clams, lps and other softies.
MH are large, can be bought cheap enough in comparison with other equipment you buy for your se-ups (although to some may be expensive), and allow much more diversity, and allow you to expand your species as you get on in the hobby. The only issue is heat. But that can be dealt with via an extractor fan, or a well designed hood with computer fans. I dont get the "very dangerous" part though. Any electrics plus SW set-ups (including FW) is extremly dangerous. Get a qualified electrician to wire you units if you go DIY. (Its illegal here in aus to DIY any wiring). If your after cheap MH units, dont buy a pendant type system, if your into DIY, make yourself a hood, and buy a couple of Shopfitters, and then buy the right bulb seperate. They work out cheaper, and do the same job.
T5's are the same price. They have a greater impact than PC's, and people have kept SPS and clams with them, you just need 4 or more really. They have the added benefit of not overheating.
When you see a tank with PC lighting, and sit it next to a setup with MH bulbs, there is a clear difference in the colour, and intensity, making the water "sparkle" and IMO, MH's give the better look, although thats up to the individual.
) If you choose to add your opinion, factor in different animal's preferences, please! I must know this!
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