Ideal halide Kelvin rating?
Hi bob, << Blundell here. >> I’m using 2 x 250W 20K BLV now, I love the soothing lightings & colours of the corals shown under it but I notice the PAR might not be strong enough to reach the corals at the tank bottom and also the Acros are not growing as fast. << Yes I have that exact type of lighting and problem. I really like the 20k look but the amount of visual light given off is just way too low. >> Have tried the 10K before, love the growth and PAR but dislike the bright whiteness of the light and also the corals ain’t that colourful when compare with the 20K bulbs. Pls give me your advice. << You asked the right person. I've been looking into this heavily and have decided (for the time being) that the Aqualine Busch bulbs are probably the best. But the brand name is only somewhat important, the main key (to looks and growth) I think is probably the new line of 14k's now on the market. That is what I'm switching to. However, 10k's with supplemental actinics is really nice as well
