Carman34L In Memoriam Mar 25, 2006 #1 About how far off the surface of the water should a 400w MH bulb be?
MarineTeng New member Apr 17, 2006 #4 why so far? i know temperature can be one, light spread any other reasons? can you make it closer if you have a glass shield of some sort
why so far? i know temperature can be one, light spread any other reasons? can you make it closer if you have a glass shield of some sort