ccCapt
SW 20 & Over Club
I don't think Phoenix makes a 175w bulb, but the 250w Phoenix 14K bulb (74 PPFD) puts out less PAR then the 175w Iwasaki 15K (86 PPFD).
Manhattan Reefs - Sanjay's Lighting Guide
You're using more electricity and generating more heat with the 250 vs the 175 and getting less PAR. I never used the Phoenix but they are a popluar bulb.
Manhattan Reefs - Sanjay's Lighting Guide
You're using more electricity and generating more heat with the 250 vs the 175 and getting less PAR. I never used the Phoenix but they are a popluar bulb.