Lighting question

schwark

Junior Poster
Aug 18, 2008
18
0
1
37
Mokena, IL
How long does everyone keep their lights on for their planted tank? It probably depends on the size of tank/wattage, but I was just wondering.

I have a 65 watt coralife 6700k bulb for a 20 gallon and I usually keep them on for about 10 hours. I am decreasing the light by an hour since I am getting some algae on my rubin swords.
 

Carissa

Guru Class Expert
Jun 8, 2007
678
0
16
I usually stick with 8 - 9 hours, on the lower end for non-co2 tanks or if I'm going away or something. I would rather have the plants grow a little less per day, and have less algae too. Less work all around.
 

ccLansman

Guru Class Expert
Jan 22, 2008
375
0
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Vista, Ca
im stubborn i have co2 injected so i go with 2x65w for 8 hrs and 4 hrs at 4x65w i have a 60 gal tank.

Rule of thumb, w/gals = wpg sooo.....

65/20 = 3.25 (unless you have co2 and good conditions this can lead to trouble)
 

JDowns

Lifetime Charter Member
Lifetime Member
Jul 27, 2007
355
22
18
50
New Hope, Pennsylvania
On my 29 gallon nano's that are El Natural.

36w PC 9 hours. Half the available lighting. But I only have low light plants in these tanks.

On the 150 gallon with CO2.

240w HOT5 (screened to cut down the intensity and slow down growth) for 9 hours.
 

schwark

Junior Poster
Aug 18, 2008
18
0
1
37
Mokena, IL
Yeah... I can see the trouble I can run into. I have a Red Sea CO2 kit, and that has been helping, but I believe the CO2 is starting to decrease. I am waiting for my drop checker in the mail. I turned down my photo period by an hour... and I might turn it down another hour depending on my tests. I think it might be smart with the DIY CO2 to replace every 2 weeks rather than 3 to 4 weeks. It seems like the CO2 is not as consistent. I will restart the CO2 and then test the next day.. .and then a week, and then 2 weeks and see how it responds. Thanks again for the help!