55 and 65 are usually interchangeable. BTW
, I found a place on ebay that sells 4 55 watt bulbs for arouf $55 shipped. 10k, actinic or 50/50.
Depending on how much actinic you want. Get 2 50/50's if your unsure.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,