kutcha;282943 said:
but there is one person or should i say animal that knows the difference YOUR CORALS!!!!
True. Most everybody who has had good combos of both will tell you that the 14K Phoenix on M80 will grow and color coral slightly better than 400W Radium on M59. However, the reflectors on most the DE stuff don't spread very well, so the SE 250 or 400W radium is still a better all-around MH setup for lots of tanks. The typical HQI setup can easily handle a 2x2x2 area, but struggles beyond that in the a fixture like an AquaMedic or Giesmann.
This is why 250W radiums have started to be run on M80 and 400W radium on 400W HQI ballasts (forgot the ANSI code), where they are about equal to the 250W HQI Phoenix for output (the color is different, but AWESOME), but can also be used in LumenMax, LumerArc, Cayman, or the like, reflectors... so a great combo.
I love them both. I will likely never sell my DE or SE setups since I don't think that there is any kind of a replacement for either.