Lighting hours
 

Interested to see how long everybody keeps their main lights on for

12hrs on/12hrs off. 4x 39W T5 each bulb is a different spectrum. Tank also gets natural sunlight from behind some days so that does extend the light period.

10 hours on 3x250w and 12 hours on 4xt5ho.

Voted 7, but it's actually 7.5 hours.

For a more accurate response, you may have wanted to differentiate between T5s and halides on the poll as people tend to treat them a bit different.

On my 90 the halides are on for 6 hours, and supplemental for 13 hours. (This was my vote answer)

On my nano the T5s are all on 13 hours.

T5's: 12 hours
Halides: 8 hours

T5's 12hrs
MHs 6 hrs
Seemed to have pretty good results.
Now switched over to LEDs so I cant really vote with those as now on a scheduled 24hr program.

12 Hours - 2 Vertex Illumilux (453nm Blue & 7K White) LED modules & 3 Ecoxotic Stunner LED strips (453nm Blue & 8K White)

24 Hours - 2 Ecoxotic Stunner LED strips (453nm Blue) Moonlights

However, I'm thinking of dropping the main lighting down to 10 hours a day. I'm battling a massive GHA outbreak at the moment.

blues 7am-11pm, whites 8am-930pm, no hair algae, no diatoms, the anemone has tripled in size in a year.

My power compacts turn on at 11am, my halides kick in at 12pm and run until 6pm, then my power compacts turn off at 7pm.