[hinoone66]

I purchased a 4 foot flour. fixture. It holds 4 bulbs. I have two 6500k daylight bulbs. What two other bulbs can i buy to help growth in my 75 gal 48x24x21 tank. I am looking for moderate to high light. I am running co2 system.

 

[dj2606]

2 10k bulbs. And alternate them 6500k, 10000k, 6500k, 10000k

 

[supersmirky]

I hear the 9325 choice is very popular too and produces really great results