[Sudad]

Hi all,

I also use the Giesemann MegaChrome Coral 14.500 K (250 Watt) now. I never used the phoenix before so I can't judge it.

About the Giesemann I'm very content with the colours of my corals and it looks very natural, like sun is shining in your tank - but not yellow. Little similar to the "BLV Ushio Group" bulbs.

Not too much blue and not too much purple like other bulbs with 14.500 K. Just white and very bright.

I can't believe that it is a 14.500 K bulb, because other bulbs are often very dark and blue with 14.500 K (e.g. Aquaconnect performance).
But this bulb is so bright like a 10.000 K or 12.000 K bulb - but without the ugly yellow tint. But you should care that your water is crystal clear - otherwise it would enhance your yellow tint of the water.

I use this bulb (250 Watt) in combination with 4 x T5 24 Watt ATI Blue Plus. For me it looks better than with the Giesemann T5 actinic+. My lightning system is a Giesemann Infiniti. In my opinion the Giesemann (250 Watt) needs the addition of 4x24 Watt T5 Blue bulbs. So I wouldn't combine it with some daylight bulbs or 50/50 bulbs. Maybe with some pure actinics.

My stylophora pistilata and poccilopora became intensive pink with the Giesemann.

Note: The first 1-2 days (20 hours) the bulb is very yellow (like an 10.000 K bulb), but at the 3rd day it changes its colour to white with a tint of blue. So, don't be disappointed the first day - just wait 1-2 days and you would be surprised how cool it looks.

Sudad