replacing T5 bulbs

[lorenz0]

You can push it to 8 months easily. just remember when you replace the bulbs to raise the fixture up if you do so. The intensity of the bulbs at that stage can burn/bleach corals due to the increase of output with newer bulbs. Than raise it back down a week later

as for bulb choices, that combo is a decent all around combo and i would stick to similar kelvin rated bulbs