Is this the specs for your lighting:
"The H4 design produces PAR light output levels equal to a 400W MH 20K. It uses 40% less energy than the Metal Halide Fixtures it replaces. The life of the LED's is 50,000 hours, so it almost eliminates metal halide and fluorescent bulb replacements."
http://www.jlaquatics.com/phpstore/s..._ID=pfo-s67100
If so--I am envious-no wonder the fantastic colour in that blasto