Yellow MH Bulbs

[brizzo]

Originally Posted by Whatigot

I have read on this forum that a halides spectrum can change rather significantly during the "break in period".

I know this holds true to security light metal halides lamps!

Another way to acclimate your new bulbs and your livestock, is to raise your lights and put a layer of black fibreglass window screen over the top of the tank. It lowers the intensity very nicely