Which of these two T5's

crystalview

Guru Class Expert
Sep 6, 2008
177
0
16
64
between Sac and Reno
Hi my fixture only uses one size bulb so now I need to find which kind I want. I found two. I am not sure which would give me the bright noon sun look. I know that 21w (2) is for a deep 45g but I thought I might add another single lamp to the tank if I find the 42w is to low. I thought I could keep this fixture on the tank top and not have it raised until I can get the PAR to measure whats what with my tank. The 96w I am using now is to bright. Please advise Thanks

Energy Savers T5 Fluorescent Bulb 36 Inch Colormax-Aquarium Lighting

Coralife (energy Savers) 10000k Fluorescent 21 Watt Bulb 36 Inch T5-Aquarium Lighting
 

SuperColey1

Guru Class Expert
Feb 17, 2007
503
0
16
46
Lincoln, UK
They both have a CRI over 90% which means they are quite good in colour quality accuracy.

Therefore it is down to personal preference. The first is a pinkish colour and the second a bright white bordering towards a blueish.

AC