do you have a pic of your current hood? you might be able to use the one you have. I had the standard plastic hood and the 48" one worked perfect for me....yours is probably different though
if you have a pic post it up i bet its the same as mine. If it is all you have to do is pull the 2 lights off (assuming they are seperate from the hoods) and set the 48" light on
Youre set!!! all you need to do is ditch those and get 1 48" fixture! I got mine for 40 bucks (coralife with 1 T5 6700K bulb and 1 T5 full spectrum bulb)
Clean the acrylic under the lights and it will make a big difference too
mine just went right over the lips and i cant see much light at all reflecting out. I just pulled the old ones off and put the new one on
and it is a coralife fixture