any one use 250w EYE/Iwasaki 14,000k DE?

[mic209]

Since my first thread is MIA, i am reposting this. Looking for pics of this bulb in action, and thoughts and experiences with color and growth with this bulb.

[bigmatt]

I am running it, currently burning in for 20 hours. Excellent bulb, quality is top notch. Color starts of slightly yellow but burns into a perfect icy blueish white, im also running 2 uvl superactinic pc's. My sps and all other corals absolutely love this light.

[IndyMatt]

If I used 250W halides this is the bulb that I would use. I use the 175W version and absolutely love this bulb. Well worth the money!

[mic209]

i'm currently running a reeflux 12k DE, does anybody know how the iwasaki 14k compares PAR wise? Also, how does it compare to a Phoenix 14k

[bigmatt]

<a href=showthread.php?s=&postid=12306551#post12306551 target=_blank>Originally posted</a> by mic209
i'm currently running a reeflux 12k DE, does anybody know how the iwasaki 14k compares PAR wise? Also, how does it compare to a Phoenix 14k

The Iwasaki will beat both in par and offer better growth, The growth I have seen with pheonix is horrible

[bdare]

Do you have any numbers to prove this? The phoenix notoriously has very high par numbers for a 14K bulb.

[Pescados]

And my growth from the Phoenix 14k is far from horrible!

[thoma226]

ya here are the numbers look them up

http://www.reeflightinginfo.arvixe.com/

[mic209]

<a href=showthread.php?s=&postid=12307960#post12307960 target=_blank>Originally posted</a> by thoma226
ya here are the numbers look them up

http://www.reeflightinginfo.arvixe.com/

There's no data on there for the 250w Iwasaki 14k DE

[DarG]

sanjay did preliminary testing on the Iwasaki and results were posted in a thread when the bulb first came out. It seemed to have slightly higher par than the Phoenix but there was some confusion as to the numbers being shielded for one and unshielded for the other. Regardless, the Iwasaki is a crisp white, bright bulb. Never saw any yellow in it at any point. Has a very very slight blue hue to my eye but mostly what I would call a crisp white. To my eye it appears brighter than the Phoenix but that is meaningless especially with the Phoenix being much bluer.

I dont think I have ever read of anyone having poor growth with the Phoenix except for in this thread but regardless, growth shouldnt be an issue with the Iwasaki.

It looks nothing like the Reeflux to my eye. It is much brighter visually as well. The Iwasaki had ppfd number somewhere in the low 90's on M80 ballast from Sanjays early test (from memory). I doubt that the 12K reeflux DE is much over the low 50's if that high. There are no numbers on the DE 250 watt Reeflux bulbs only the SE's.

[skyfireblaze]

Here are a couple of other threads that might help you out ...

Click Here (http://reefcentral.com/forums/showthread.php?s=&threadid=1359480)

and Click Here (http://reefcentral.com/forums/showthread.php?s=&threadid=1361018)

and Click Here again (http://reefcentral.com/forums/showthread.php?s=&threadid=1362591)

You'll find pictures of the Iwasaki 250W 14K along with the Phoenix 14K and the Giesemann 14.5K. Links to the spectral plots for the Iwasaki 14K (the one's produced by Sanjay when the bulb was first released) are also linked to.

Hope these help.
:D

[bdare]

Ok... so what's the verdict... on an E-balast how do they look next to a Phoenix?

I have a phoenix with 2 39w T5 blue + bulbs. It's just a touch too blue for me. I definitely don't want a white bulb...

[thoma226]

the iwasaki 14/15k is a "white" bulb.

[DarG]

Yep, Id call the EYE crisp white with only the very slightest hint of blue. Looks great with a blue plus and actinic or a couple of actinics if you like a little blue/actinic tint.

[xtm]

Here's the plot for the EYE 14,000k vs. the 14,000k PEC lamp (thank you Sanjay)

http://reefcentral.com/gallery/data/500/321Iwasaki-phoenix-icecap.jpg

As expected, the EYE 14,000k definitely looks whiter than the PEC bulb as it has a lower spike on the 450nm range. But look at the PPFD - they are almost head to head, with a slight edge to the PEC lamp. I am now using the EYE 14,000K lamp and in all honesty, this IS the BEST bulb I have ever used in terms of coloration, crispness, color rendition, intensity, and the overall tank appeal. As far as growth, I don't know yet - I've only had the Sakis for 1 week.

So here's my opinion: When I used the PEC lamp, I had good growth-- however my tank looked like it was full of Windex and everything looked washed out. Given that the EYE 14,000K lamp has the same PAR as the PEC lamp, I would say that the growth will be the same BUT with a whiter look. If you like the growth that you get from the PEC lamp but hate the washed out look, the EYE 14,00K is YOUR bulb.

The Saki is white-- not yellow, not blue- WHITE. Crisp, bright, pure white. It will show the true colors of your corals and not enhance it like most 20K's do.

Here's a sample pic, from the IceCap forum.. EYE 14k firing on IceCap 250w e-ballast

http://reefcentral.com/gallery/data/500/12414LFair_1.jpg

And here's the complete thread

http://reefcentral.com/forums/showthread.php?s=&threadid=1116512&highlight=waterscape

I will post some pics of my tank later..

[DarG]

That was a quick and dirty test of the Iwasaki bulb ... note that both bulbs are driven by electronic ballasts and NOT shielded.

[xtm]

IIRC, I've read that the Sakis have a built-in UV shield on the outer envelope of the bulb itself--- negating the need for a UV glass shield. (like an SE bulb) I need to find that article.. if proven true, this will blow the PEC lamp out of the water in terms of PAR, since the glass shield won't be needed.

[DarG]

<a href=showthread.php?s=&postid=12323631#post12323631 target=_blank>Originally posted</a> by xtm
IIRC, I've read that the Sakis have a built-in UV shield on the outer envelope of the bulb itself--- negating the need for a UV glass shield. (like an SE bulb) I need to find that article.. if proven true, this will blow the PEC lamp out of the water in terms of PAR, since the glass shield won't be needed.

The PEC lamp also has the UV protected outer glass from what I have read. More and more DE lamp manufacturers are using it. That UV shield is used as a precaution only, a backup in the event that the fixtures glass shield should break. The fixture code for these lamps is E just like all other DE's which mean that they are rated for Enclosed fixtures only, meaning ones with a glass shield. The Iwasaki, nor the Phoenix are rated for use without the shield in place. I dont know how the rumor got started that some of the lamps dont need the shield because of the UV protection built in but it is incorrect. If and when you see a DE lamps rated for use in open fixtures then it is safe for use in open fixtures. As long as they are rated for enclosed fixtures only that is how they should be used. I dont think the UV protection is complete either so ignoring the E rating may even be dangerous to the corals or even your eyes. Halides were inended for area lighting, placed far away from people. The UV protection in the outer glass may be ok with the bulbs being high up in 20 foot ceilings should the fixture glass break. But The way we use them, if the UV protection is only partial as I think it is, it may pose even more dangers since our corals and our eyes are so close to the bulbs.