yes, you RR is correct. the aquatic lighting does have minimal electrical work involved. wiring up the ballast the the socket, the cord to the ballast, and mounting everything. yes, it requires more work than something plug and play, but the skill level needed to put it together is on a level my 10 yr old sister could do. anyway, whatever you want...save a little money and do it yourself, or spend the extra amount to have them made already. it's whatever your experience will let you do
as for the 5500K bulbs...yea, they are yellow...but so what? some people just want the "blue" look. i still think the corals will be ok with a 5500K bulb. is this not correct? as far as actinics, i already had a 96watt 50/50 PC, so i have some actinic. so mine looks ok, definetely pretty yellow, but ok for now.
and BTW, i did order 12000K bulbs with my 2 retro's from aquaticlight, but they were sold out. it was an extra $79 per kit (if i remember correctly for the 12000K's), so $160 more. still around $300 bucks, NOT $500.
to each their own, good luck with your choice
-One