Re: Kelvin options

[Kate Breimayer <kate@munat.com>]

I know what you mean, I put the cheapo H. Despot bulbs over two tanks 
and the plants did great, grew water lettuce like you would not believe 
for indoors and the plants below it looked great, with no algae in that 
tank at all. Another tank had the screw in bulbs in clamplights with the 
clamps removed (get the kind with ventilation holes in the aluminum dome 
and the bulbs that are ok for enclosed fixtures) and placed them face 
down right on the glass like spotlights. They grew nice red plants. They 
petered out after a little over a year and I moved them to regular in 
house fixtures. They did look yellowish but worked great and still have 
many years service for the bathroom or whatever, which is more than I 
can say for all the useless leftover 4 foot flourescent bulbs I am 
accumulating. Guess they will work in my art studio whenever I get that 
set up. :)
So when I replaced the cheap yellow bulbs I went after the new full 
spectrum bulbs at H Despot, which were individually packaged and placed 
right up next to the Ott lights. They are cold white which is no real 
improvement over yellow, and they grow nothing but algae! But boy do 
they grow algae... I am going to have to move them to the algaescape 
aquarium where they can get some use. Just kidding, I can't think of any 
use for them except maybe over the amano shrimp tank. So it's back to 
cheapo bulk screw in compact flourescent for me.
Want to see what I need an art studio for?
http://www.fotolog.net/electrokate/?photo_id=3312269
Kate B
Oly WA

Hess, Clay A wrote:

> 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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