It's time for me to replace the light bulbs for my reef tank again. I'm wondering which light bulb (K
levels) combination is the best for coral growth. Right now, I have two 65K PC
(65 watt), two actinic 03 (420nm)PC
(65 watt) and two 10,000K MH
(250 watt) bulbs. I've had some decent coral growth with this combination but am wondering if there is a better combination. It looks like my options for the PC
lights that I'm aware of are 65K, 67K, or 10,000K. For the MH
bulbs it's either 10,000K, 15,000K or 20,000K.
My lighting schedule is as follows:
8:30 AM - 8:30 PM PC
11:30 AM - 4:30 PM MH
lights with PC
8:30 PM - 8:30 AM moon lights.
I have a variety of hard and soft corals (leathers, muchrooms, digitata, birdsnest, star polyps, etc.) I'd like to focus more on coral growth than looks.
I know the 65K bulbs has a yellowish tint to them but the actinics seem to do an OK job of flushing them out. Any feedback would be appreciated.