Discussion in 'Reef Lighting' started by reef84, Feb 12, 2013.
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is there any visible difference in the color of these bulbs and if so what is the difference
Yes there is. The 420 is violet and the 454 is royal blue.
would running one of each be a good combo? along with 14k MH
Yes or 2 420
i have always run 420s but wanted to try something new
I've tried the 454 and absolutely love them. Only reason I don't have them now is they were out of stock last time I needed to get them. I'll probably switch back to them when my current bulbs get old.
I've tried a different 4 light combination every 9 months since I started. the 454 combos are my favorite.
The Hamilton 14K already has a huge spike at 454. I would feel the best move is to supplement it with 420.
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