Noteworth reply from Pacific Sun
Hi,
This lamp can be hanged up even 2" from water surface - and still will cover (Metis CRP 850mm) -about 120x70cm(about 50"x28"). Which other lamp will cover the same are like Metis?
AI? Its using focusing lenses. Of course - attaching lenses to Metis is possible - and after that on 24" there will be more then 250 PAR but area covered by ligth will be much smaller.
PAR reading taken from lamp 8x54W ATI Aquablue and Blue Plus, 24" is UNDER 80(PAR). We have checked it.And corals still grow.
PAR is not most important - also light spectrum and lighting time. Corals have to get a certain amount of energy a day - in this case it is important to both the intensity of light - and its spectrum and exposure time.
So what is the purpose of continuing the race after increasing PAR?. Frankly -we observe that in the U.S. is a very strong emphasis on the highest PAR - but in Europe it is perceived that in addition to light (which is very important, of course) - an equally important are the other parameters of water. High PAR does not guarantee a healthy and colorful corals.
Best regards
Przemyslaw Cybulski
|