What's the diff?
Did my yearly changing of the bulbs - even though I put a new bulb on the sw
tank 4 months ago (I remember better if it's at the beginning of the year. So my question is, what is the difference in a 40W 10,000K bulb and a 40W 18,000K bulb? I put the 18,000K on the tank, but don't know the difference. Lighting has me confused.
55 gal. reef. Coralife lunar lights 4 x 65, 120 lbs live rock. Remora skimmer, 3 power heads. 2 tank raise false percula,2 pajama cardinal,hermits, snails, Xenia, leathers, mushrooms, polyp frags, yellow sea cucumber, And last but not least - the miserable mantis.