I thought that they were recommended because the zooanthee have a strong absorbsion peak in the 420 nano meter range. Evolved in because most light is absorbed by the water but blue (high freq) punches through. It was my understanding that it lets the zooanthee make more food for your coral. I have been and will be wrong again. Just the state of my knowledge today. STEVE
i placed everything at 9 in above the water for 4 days ,im on 3 days now but im lowering to 71/2 in a few days i wont go any lower than that, i was at 12 to start and boy what a diffrence
now i was worried about heat but being my conpy is 16in it seams to be cooler must be the air flow over the bulbs
Some great points here. Vho's and simular do have some effect on corals, they are however challenged a bit as to the depth they can be effective because of intencity.
DOn here is a good thread we did on how it works in corals, take a peek i think it will answer alot of questions
Corals dont really use Red...well thier is a small section of red that can be used but it is very minor when compared to the useable colors. I believe the red you are refering to with Japanese reefers is with halogens. Which contain alot of UV. they use it to bring out the UV pigments in the corals, it works but man you are rolling the dice when you play with UV like that.