Ok, so if I have SPS at 200mm below the lights what difference would there be between the the T5 and MH, regarding coral health and growth ?mh can penetrate deeper.
mh give of more heat.
a t5 globe would cover more area than a mh, well that depends how high the mh is.
thats all i can come up with. maybe the one looses its par quicker?
hence t5's get replaced soon than mh globes?
Ok lets say both techs are actually the same 10000K rating, what is the difference to an SPS corsal 200mm away from either lighting tech ?May not give the same colour depending on ballast of MH, PAR rating on MH should be much higher. Think time to replace MH globe is extended to that of T5. PLus you just need a lot more T5s.
(EDITED: Gaz beats me again.)
I am no guru. Not by a long shot. But in laymen s terms we also have a measure of the energy of light ie photon ....Can be seen as a packet of energy/light. There are a few other reference to light measurement. Color spectrum is only one part. PAR (photosynthetic available radiation) is the critical one... as photosynthesis occurs in a very specific wavelength. This measurement takes into account the energy aspect as well and is easy to understand.What is the difference between a 10000K T5 and metal halide of the same Kelvin rating, other than the obvious power rating difference and globe type?