Photoperiod

[SCULPIN]

Hi all,
Anyone reducing their MH photoperiod? I'm experimenting with going from 10 to 7 hrs a day for my 250/10k's. Let me know if you've seen any changes if you've done this.-Thanks

[GTR]

What's your goal?

SteveU

[OUinLA]

I reduced mine about 2 months ago from 10 hours to 4 hours and I love it.

[Adam]

What does reducing photoperiod actually do for the corals?

[GTR]

What does reducing photoperiod actually do for the corals?

It's an indirect thing. Makes the tank owner much happier due to the reduced power bill so that the love-hate relationship is pushed more towards the love side.


SteveU

[OUinLA]

I can't say for certain that it's doing anything but my corals look a little better. That could be do to a number of things (improved tank conditions, more flow, dialed in skimmer, etc). But, the growth rates definately haven't declined and I would say they might be growing faster (could be caused from what I mentioned above). The good news is, lower electricity costs, and less heat. it's very hot where I live and the tank is in a room with no AC. So the lights come on at night (9:00pm-1:00am) when it's cooling off and my temp stays at 79

[SCULPIN]

photoperiod

Bob (aged salt) mentioned something about "photo inhibited" corals? I noticed by moving a couple of pieces lower in my tank the color improved. I've also tweaked a couple of things at the same time, so I'm not being very scientific about this .......

[nyfireman3097]

I also went from 10 hours to 4 hours and think things look alot better then before
Nick

[7thheaven]

Dear Madison and Nick~

Do you use actinic supplements?(VHO or T5) How about that?

Just Reducing MH photoperiod?

[nyfireman3097]

I dont what i did was i had 3 400w 20k XM's i took 2 10k XM and put them on the sides and kept one 20k in the middle i run the 20k for 12 hours as the actinic and the 2 10k for 4 hours
Nick

[skeletor]

I reduced mine about 2 months ago from 10 hours to 4 hours and I love it.

hey Madison,
is this on your 30gal ? IIRC you run a 250w over it right ?

thanks,
rich.