Lights and CO2 operation hours

**Vipertarius** · 9th Oct 2009, 10:37

Hi can expert give me advice on your lights and co2 operation hours you guys have?
I use to on it 1 hour alternately like 1, 4, 7, 10….. For 8 hours to reduce to heat from my PL light as that tank is concealed. But have be disturbed by the on and off light so leave a 2” gap to dispense heat.
Currently I on my lights and co2 from 8pm to 4am as I don’t find the needs to on it in the day time moreover it can act as a night light in the living room.

**Wahlin** · 9th Oct 2009, 13:35

I use 2 difference setups

Tank 1
7am to 11am then 1.30pm to 5.30pm = 8 hours

Tank 2
5am to 9am then 6pm to 10pm = 8 hours

**Cross** · 9th Oct 2009, 14:42

Plants need blackout period. Not a good idea to leave it on through the night

**tco** · 9th Oct 2009, 17:13

I set my timer to on my light when i at home,

6am to 8am and 6pm to 12am = 8 hrs

**MOKHTAR** · 9th Oct 2009, 17:24

I used to use timer, 8am-12nn (ON), 12nn-3pm(OFF) and 3pm-8pm(ON AGAIN). But I got hair algae growing.
So, I ON a day and OFF a day, alternately.

**dna9179** · 9th Oct 2009, 19:59

This thread is nice, let us explore more option of lighting period

**Wahlin** · 9th Oct 2009, 20:26

Originally Posted by MOKHTAR

I used to use timer, 8am-12nn (ON), 12nn-3pm(OFF) and 3pm-8pm(ON AGAIN). But I got hair algae growing.
So, I ON a day and OFF a day, alternately.

This is interesting, does it work ?

**mrnyunus** · 10th Oct 2009, 02:42

my tanks i switch on the same as the day...so it dosent confuse the fishes and plants i guess...it dosent confuse me most importantly

**MOKHTAR** · 12th Oct 2009, 16:50

Originally Posted by Wahlin

This is interesting, does it work ?

Well, it does, a little. Sometime I just never turn-on the light for a day. Well the plants definitely can take it for 1 or 2 days without lights.

**Blue Whale** · 29th Oct 2009, 07:07

For me:

12-1pm 1 hr
Strongest light in the day? Perhaps not, tank is away from direct Sun. Just want to enjoy it if I am around.

4/5pm to 10pm 5 hrs
The romantic evening just got better with the lights on. I can enjoy the fishy scenery and light up my living room. 10pm of course, need to sleep, fish need to sleep too, encourages one to sleep early.

What if algae grows?
Shut light for 3 days or until most of the algae is lesser, leave some for the fish, no lah, little bit of algae looks nice also. If not, hot water treatment on the drift wood. Some will use bleach, confirm effective but must be careful to wash it very very very thoroughly.