RE: Kelvin options

["Gary Johnson" <blackhawk@msn.com>]

Although I personally don't have a FW tank right now my brother does. He has
a 100 gallon Planted tank and is running a 175W 10K MH along with 2 110W
VHO. The VHO nicely balances out the 10K bulbs. Also, remember that
different MH bulbs will look differently on different types of ballast. One
will be much yellower on a magnetic ballast than on an electronic ballast.
Plus an Ushio 10K is a different color than an Aqualine AB 10K. My guess is
that the best bulb for plants would actually be the Iwasaki 6500k bulbs.
They are pretty yellow but are probably the best bulb out there for what you
want. I use the Ushio 10K on my reef tank and am now thinking I would like
something a touch more blue so I may try the Aqualine AB 10K.

For a good place to buy bulbs try www.hellolights.com. I've used them in the
past and they had excellent service. Also http://www.exoticfish.com/ almost
always has "German 10K 175W" bulbs for $59.99.

Gary

-----Original Message-----
From: owner-gsas-member@thekrib.com [mailto:owner-gsas-member@thekrib.com]
On Behalf Of Hess, Clay A
Sent: Wednesday, January 07, 2004 2:06 PM
To: gsas-member@thekrib.com
Subject: RE: Kelvin options

After having set up my 100 gallon plant tank with half CF's (5000K 55W
bulbs) and half CF (the typical 22W {I think they are 22W} spiral bulbs from
Home Depot) I have found that my plants seem to do better on the Home Depot
bulbs and they are a lot cheaper to use (at least half as much as what I
paid for the CF's from AHSupply).  I am curious if anyone else has had
experience using both bulb types and what their results have been.  The fish
sure look better under the AHSupply bulbs, but, the plants do not seem to do
as well.  Anyone else played around with the Home Depot style bulbs?  Anyone
know what the Technical term is for the bulbs from Home Depot ~~laughing at
my lack of knowledge here~~?

-----Original Message-----
From: alex wetmore [mailto:alex@phred.org] 
Sent: Wednesday, January 07, 2004 12:30 PM
To: gsas-member@thekrib.com
Subject: Re: Kelvin options


On Wed, 7 Jan 2004, Susan Welenofsky wrote:
> What Kelvin are the bulbs at at the Indoor Sun Shop, and how much are 
> they? I haven't seen much for 6500 K bulbs through eBay. I'm getting a 
> 5,000 K bulb. Would you recommend something else, like 10,000 K?

5000 would be much better than 10,000 for a planted tank.  10,000 is going
to be very blue.

I run a mix of 5000 and 6700K bulbs in my aquarium.  I don't use metal
halides though, just CF.  The best CF bulbs that I've used are the 92 CRI
5000K 55w bulbs from ahsupply.com.  They work well on tanks that are a
multiple of 24" wide.

I have the parts on order to switch my 60 gallon planted tank from 6 T8 36W
bulbs to 2 96W compact flourescent bulbs.  If anyone is interested in some
high quality ballasts for T8 bulbs let me know. The bulbs that I have are
way past their prime (although I think I have two high-CRI 36" bulbs as
spares somewhere), but the ballasts are in good shape.  They are about a
year old, I bought them from Bulbman down near the stadiums.

alex

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