A lot of hydroponics stores carry good bulbs(ours carry a full selection for reef use and even have tanks in the stores), If they don't have them they should be able to order them in. Check out Progresive Reef (Canreef sponsor) They are a division of Progressive Growth hydroponics. I think you would be better with 250's. They will be good for all types of coral. With the 175's you will be somewhat limited. Little more money but at least you you won't do what I did and spend a whole lot more upgrading.
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