lildark185

Is the best combo for plant and viewing pleasure 6700k/GE 9325k or is it GE/GE?

John N.

Naja, ya same here. The price comes up a bit higher after shipping.

Lildark, the best combo is basically your preference to your eye. Some like it really bright and red, some like a mixture, some like it whiter looking...I Prefer 6700k + GE 9325k and believe it gives the best coloration of fish, and plants.

-John N.

Cytrane

So I believe this would be the best place to jump in for my first post, since I'm getting bogged down in terminology.

I have a 29g tank, and am contemplating getting a combination of tubes for lighting that would suit a NEW tank (as well as suit an amateur).

-I don't plan on adding fish any time soon, I believe I should get the plants right/not dying off before I add fish.

-I currently have an AQUA-GLO 18000K (20W T-8 ) over my tank, and from what I read, what I originally understood about growing bulbs and viewing bulbs is backward. Would a combo of this 18000K and something else do well for growing as well as viewing color changes as my new plants grow? From what I can tell, the 18000K is extremely white (anything beats the bulb I had in there).

I think I've screwed up, plus I don't have a dual-tube hood as of yet, which could really be holding me back in the long run.

Wood

Here are the direct links to both products. $14 each.

55 Watt 20.7" 4 Pin Biax - Aquarium Fresh & Saltwater Phosphor: Light Bulbs Etc, Inc.

Atlanta Light Bulbs, Inc.

K20A2

Just to be certain before I go buying anything.. These bulbs have the 2G11 base , and will fit in the AH supply kits, correct?

turbomkt

Yes. I have some myself.

Newt

To me the best image is the 5000K and the GE 9325K. The 5000K must have a fairly high CRI to compensate for the low CRI of the 9325K. I really hate the coralife 6700K as it has a huge green spike in its spectral output, as do most of their bulbs.

cyber_ecco

Do the 9325k bulbs actually do anything for the plants? Or is it purely for cosmetic looks? I got a 4X65W over my 55 gallon, and I'm just wondering if those 9325k bulbs are only for looks. Will still have adequate lighting with just the 2 6700k bulbs. With such a low CRI rating, how useful are the 9325k bulbs for the plant growth?

Gord.

Newt

The plants dont care what the CRI rating is the see light as a spectrum. Blue and red light are what is used for photosynthesis. The 9325 has a blue spike in the proper place and an orange/red just below where it will do the most good. So the 9325s will grow plants. The kelvin rating is purely what appeals to you as the viewer.

Newt

Here is a link for the users of the GE 9325K bulb. They are selling them for $13.22 each.
http://www.1000bulbs.com/product.php?product=32672



I think the 9325K bulb is a marketing gimick in that I really don't believe it registers at 9325 deg. Kelvin. If you compare it to a 10,000K bulb (or a 6500K or a 5000K) it actually appears pinkish which would put it at about half the kelvin it is marketed at.