PAR vs PUR has not been an issue with MH
due to the fact they offer such a broad spectrum.
it is important to know exactly what spectrum is being given out. It is also important to know what is being left out. Specifically the spectrum that algaes use versus what corals use. We all want to feed our corals and if we can starve our algaes in our DT all the better.
It's important to note that most LED
manufacturers do not manufacture anything specifically for the marine industry. We are a secondary market at best. They will sell us what they are making for bigger fish so to speak. If it works great...if not.....
Would you put 6500 k
compact flourescents on your DT? Then why would we settle for 6500k LEDs?
Someone said the white only made their tank look dirty... well...a 6500 k
bulb would do that.