36 W Compact Fluorenscent 50/50

[Tanngu87]

I have a 15 Gallon Tall Tank and i have a few mushroom and polyps how long should is leave my 36 W Compact Fluorenscent 50/50 on for a day?

 

[TimSchmidt]

I do a 12 hour light schedule.

8 am - actinics on (moonlights off)
9 am - actinics and daylights on
7 pm - daylights off, actinics still on
8 pm - actinics off and daylights off (moonlights on)