Tropical Fish Keeping - Aquarium fish care and resources

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bonesman 11-27-2009 08:56 PM

lighting question
i just had a question about my lighting
i just got a new compact flourescent light and i wasnt sure whether to put the 2 blue actinic bulbs on a timer or leave them on 24/7 i already have the 2 10,000k lights on a timer 12 on 12 off

jmlampert23 11-27-2009 09:12 PM

i do not htink you should leave them on all day long. 12 on 12 off would be perferred. think of it as day and night. i also know you can buy night time moon simulating bulbs for night time

bonesman 11-27-2009 10:50 PM

thank you the store i bought my light at said to leave the blue actinic bulb on all night but i didnt think that sounded right

wake49 11-28-2009 07:06 AM

No 12 on 12 off is good for actinics. The guy at the store has probably seen tanks with LED moonlights on at night, but they are a much dimmer light than actinics.

How long do you keep the 10000k's on?

bonesman 11-29-2009 01:04 AM

i keep the 10,000ks on 12 on 12 off also is that right

wake49 11-30-2009 07:09 AM

I keep my actinics on for about 11 hours a day and my 10,000k's on for 5 hours.

onefish2fish 12-01-2009 05:15 AM


Originally Posted by wake49 (Post 282606)
I keep my actinics on for about 11 hours a day and my 10,000k's on for 5 hours.

i assume thats halides?

with PCs id personally do 10-12 hours with the actinics and 8-10 with the 10ks

wake49 12-01-2009 07:14 AM

It's T5HO. I used to keep them on longer, but I was having GHA problems, so I had to cut back a little. My original lighting was 12 hours with actinics and 8 hours with 10,000k's. The GHA has resided, so I might leave the 10,000k's on longer... My corals are doing great on this schedule, so i don't know if a change is necassary.

Kellsindell 12-10-2009 10:49 PM

If it aint broke, don't fix it! :-D

I keep my MH on for 8hrs and my Actinics (VHO HO) for 12hrs. Everyone has their own schedule. Just make sure they get more then 6hrs a day and less then 13hrs. I've seen personally and have heard from others that this can be a costly mistake.

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