Re: [GSAS-Member] Catalina T5HO fixture report; photoperiod?

[Matt Staroscik <matt@wrongcrowd.com>]

216W @ 6700K


On Sun, Dec 27, 2009 at 6:55 PM, Susan Welenofsky <welenofsky@comcast.net>wrote:

> How many watts and what K?
>
> Susan
>
> On Dec 27, 2009, at 1:36 PM, Matt Staroscik wrote:
>
> > The Catalina T5HO light fixture that I ordered arrived, and it is indeed
> > very nice. It seems solidly constructed, has 2 switches so you can run it
> at
> > half or full power, and has individual reflectors for each bulb. At less
> > than $200 shipped with bulbs of your choice, it seems like a heck of a
> deal
> > for a 48" HO fixture. There's no way to know what kind of parts are used
> > inside but these fixtures have a good reputation so I am optimistic. It
> also
> > included legs though I don't plan to use them.
> >
> > This fixture does indeed direct a lot more light down in to the tank, so
> I
> > will probably have to get a second timer and adjust the photoperiod for a
> > burst of mid-day full power.
> >
> > For a heavily planted non-CO2 tank that is almost 24" deep, what
> photoperiod
> > would you plant guys recommend? I have seen everything from 6 to 14 hours
> > being used. I am thinking about 10 hours, with 5 hours of full power...
> but
> > I really have no idea. Previously, I ran 12 hours full power, where full
> > power was somewhat less than full power in the new fixture.
> >
> > If/when I add CO2 I assume I will want a longer/brighter photoperiod
> since
> > the plants will want to grow faster? Up to 12 hours, with 6 at full
> power?
> >
> > The plants I have all require "low to moderate" light, btw... Crypts,
> > swords, hairgrass, assorted bunches of stem plants.
> >
> > Thanks for any ideas...
> >
> > MS
> > _______________________________________________
> > GSAS-Member mailing list
> > GSAS-Member@thekrib.com
> > http://lists.thekrib.com/mailman/listinfo/gsas-member
>
> _______________________________________________
> GSAS-Member mailing list
> GSAS-Member@thekrib.com
> http://lists.thekrib.com/mailman/listinfo/gsas-member
>
_______________________________________________
GSAS-Member mailing list
GSAS-Member@thekrib.com
http://lists.thekrib.com/mailman/listinfo/gsas-member