I was thinking about putting a 2X13w PC both 50/50 over a small nano 12"X12"X12" with 3" sandbed. But the retro that I was looking at here but the sockets are not water proof. I was planning on having the light about 4" or so off the water. Do you think I will have a problem if so were should I look. Most of the 13w PC retros I have seen have the same GX23 sockets. :wacko I could add 3X13w if the sockets would be good in a canopy with out a cover on the tank. If I go with three I was thinking arranging the bulbs in this order

Front
50/50
6700k
03 actinic
Back
Or swaping out the actinic and 50/50. Tell me what you all think