Is anyone familiar with this type of lighting. 2G11 Base fitting. The bulbs I am currently using are all rated at 4k and are Philips (PL-L 36W/840/4P) and Osram (Deluxe L 36W/840) brands.
Two bulbs per light fixture. Two fixtures in use at the moment.

http://www.ecat.lighting.philips.com...7903408472_eu/
http://www.osram.com/osram_com/produ...ctId=ZMP_58958


I was trying to get a higher rating 8K bulb but are hard to come by. Until..... I happened to be in an aquarium store and hanging on the
shelves were the same 2G11 blubs but used for fish tanks that are supplied by Aqua One here in Australia.


http://www.aquariumspareparts.com.au/aqua-one-pl-36w-sunlight-bulb/


Aqua One PL-36w Sunlight Bulb

4 Pin connection
7.1k white light
41cm long
High output / Long life bulb


http://www.aquariumspareparts.com.au...ine-blue-bulb/

Aqua One PL-36w Marine Blue Bulb

4 pin connection
12k Marine Blue light
41cm long
High output / Long life bulb


http://www.aquariumspareparts.com.au/aqua-one-pl-36-tropical-bulb/


Aqua One PL-36 Tropical Bulb

4 pin connection
14k red light
41cm long
High output / Long life bulb

I am a little confused with the best lighting for my little friends.