Rob
07-23-2006, 01:30 PM
Quantification of lamp output quality is, at best, an expensive proposition. However, qualification of spectra is so inexpensive that even the budget-conscious hobbyist can afford a ‘spectrometer’. There are several ‘instruments’ available for just a few dollars from various suppliers. More... (http://www.advancedaquarist.com/2006/7/aafeature)