Re: [AGA Member] Re: fish/plant light -- or - Have you got lots of options or what?

[Paula Hofmann <paula.hofmann@gte.net>]

You bet I have my, Kasselman book.  Cheryl got it for me for my birthday last 
year.  I even read it.  I'll reread the light section.  3 feet is too long 
for my tank.  It is just a little over 2 feel wide.
Paula


On Monday 15 March 2004 08:04 am, you wrote:
> The Wayne stuff on APD is worth reading if you're really
> interested and don't mind the brutally indiscriminate
> nature of the APD search facility. Mostly stuff about
> overdriving T8s -- I was mostly paying homage.
>
> The advantage to T8s is the bulbs are usually really really
> cheap, just a few bucks each. So some folks put them on a
> ballast meant for biger bulbs and drive them twice as hard
> as normal they're birighter but burn out sooner -- but at
> those prices who cares -- anyway, that's the story with
> overdrive.
>
> The problem with small aquariums is getting enough light
> over them because they are narrow front to back and can't
> use very long bulbs either. That's what makes power
> compacts sucvh good choices. High Output (HO) T5s are just
> like PCs except they are straight and the watts are just
> slightly different so it's easier for everyone to tell them
> apart when ordering  -- 54 watts, that's a 4' HO T5; 55
> watts, thats a 2' PC (they both work on the same electronic
> ballasts); 32 watts, that's a 4' T8, 40 watts, that's a 4'
> T12.
>
> Normal Output (NO) T5s were made not because they have more
> output but because they fit into thinner places, like under
> cabinets and in small lamps. They're good replacments for
> T12 bulbs of the same wattage but that's about all -- no
> other outstanding virtues.
>
> T5 HO outfits can be expensive because they are "new". Some
> places, like IceCap, Inc. think they are fundamentally
> better somehow than PCS. I haven't seen anything that shows
> that the technology is any diff for T5 HO and PC -- only
> diff is the bend. If you keep you T5s farther apart than
> the two tubes on a PC, you'll get less of each tube's light
> being blocked by the other tube.
>
> The 2' T5s are about 22" and the 39 watters are 3' (34")1.
> Can you fit 3' bulbs over your tank?  Actuall size of bulbs
> is  1.5-2" less than an incremental foot so the 2' bulbs
> fit 2' lamps, etc.
>
>
> 2 20 watt 22" T12NO = 40 w => about 1.5 wpg of
>                               low lpw(lumens per watt)
> 2 13 watt 21" T5NO  = 26 w => about <1 wpg of lpw
> 2 24 watt 22" T5HO  = 48 w => about 1.5 wpg of high lpw
> 1 55 watt 22" PC    = 55 w => about 2 wpg of high lpw
>  (This is a nice medium amount, if you ask me. for anything
> more, you bet have CO2)
>
> 3 24 watt 22" T5HO  = 72 w => about 2.5 wpg of high lpw
> 2 39 watt 34" T5HO  = 78 w => about 2.5 wpg of high lpw
> 2 55 watt 22" PC    = 110 w => about 3.5 wpg of high lpw
>
> The HO linear bulbs and PCs are generally much more
> expensive bulbs.
>
> Hang in there, there's no quiz until Friday -- however, it
> will include plant species names. Have you got your copy of
> Kasselman yet?   ;-).
>
> sh
>
> --- Paula Hofmann <paula.hofmann@gte.net> wrote:
> > Thanks Scott,
> >
> > It's getting harder of course.  But I think I'm ready to
> > hang in there and
> > figure it out.  I didn't save the stuff Wayne Jones
> > posted.  Probably was
> > more interested in something else at the time like 'Why
> > do my fish keep
> > dying?".  Got that one solved.  I'll follow up on your
> > leads though.
>
> =====
> S. Hieber
> -  -   -   -   -   -   -   -
> Takashi Amano and More at
> the AGA Annual Convention
> Nov 12, 13 & 14, 2004
> Crystal City, Arlington, Virginia, USA
>
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-- 
Peace and love,

Paula

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