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View Full Version : Radium Iwasaki Comparison Pic

Bryan
06-15-2003, 09:00 AM
Here is a couple of pics of an Iwasaki and Radium bulb. I am concerned the Iwasaki is not burning as white as it should if it was run off a Mercury Vapour ballast. Anybody care to comment if this is the correct color of the Iwasaki, or would a MV ballast burn whiter.

left - Radium 400 watt on a 430 watt Son Agro ballast
Right - Iwasaki 250 watt DL/BH E39/41R on a Advance 71A57A0 MH
Light over the refugium is a 175 watt Coralife 6500K MH

Second pic is Iwasaki only

Not the greatest pics, but the colors are pretty accurate. Looks like I better hook up the actinics if I plan on switching back to the Iwasaki's!

http://www.members.shaw.ca/bpl521/Corals/Radium_Iwasaki.JPG


http://www.members.shaw.ca/bpl521/Corals/Iwasaki_Only.jpg
StirCrazy
06-15-2003, 03:35 PM
thats close to how the Iwasakis I have see have looked with out actinic.. yours might be a tiny bit more yellow.

Steve
pocilipora
06-15-2003, 04:59 PM
I think there is something wrong with your Iwasaki side,thats way too yellow. :eek: Ive run the 250s, 400s, both Iwasakis, and the Ushio 400s. People would come over and think I was running 10K bulbs with the Iwasakis. Arent they a 6700K bulb? Should be alot whiter.IMO. Your ballast may be the cause, or is that a real old bulb? :rolleyes: :cool: :idea:
EmilyB
06-15-2003, 05:13 PM
That is exactly how Iwasakis looked for the short time they lived here...
pocilipora
06-15-2003, 05:56 PM
Did you use carbon? My web page shows the Iwasakis running with actinics mind you. But they should not be so yellow.
Canadian Man
06-15-2003, 07:44 PM
My Iwasaki's by themselves look like that. with 4 actinic they look like the left side.
Bryan
06-15-2003, 08:25 PM
I think there is something wrong with your Iwasaki side,thats way too yellow. :eek: Ive run the 250s, 400s, both Iwasakis, and the Ushio 400s. People would come over and think I was running 10K bulbs with the Iwasakis. Arent they a 6700K bulb? Should be alot whiter.IMO. Your ballast may be the cause, or is that a real old bulb? :rolleyes: :cool: :idea:

The bulb is only about 3 months old. I suspect part of the problem is my choice of reflectors. Currently I am just using a sheet of flat stainless steel behind my bulbs. If you look around the area directly under the bulb it is bit whiter than the rest. I think a proper reflector wouldn't let the light bounce all over the place and concentrate the light in a 2x2 area.

Another point I have noticed is tanks with blue backgrounds will look whiter under the bulb than a tank with a black background.

Yes, I use carbon on a regular basis.
Jack
06-16-2003, 12:55 AM
an iwasaki beside a radium isnt fair :razz: obviously the raidum will be bluer. anyways, i run 250 iwasakis and with two vho the tank looks white. you'd be amazed how much of a difference the vho makes.

i agree with john, 4 vho's make it looks like the left side... i have thought about adding two more but it isnt "nessasary" so it gets bumped to the back of my tank wish list :wink:

a 250w Iwasaki is more intense than a 400w radium IMO. just for brightness sake and i like that..

i have seen radium/iwasaki combo tanks and they look good when the colour mixes properly
christyf5
06-17-2003, 01:31 AM
2x250W Iwasaki 6500K bulbs on Advance H37 ballasts

Actinics on:

http://www3.telus.net/seamonkey68/Dscn3732.jpg

Actinics off (eew!):
http://www3.telus.net/seamonkey68/Dscn3734.jpg

Christy :)
Bryan
06-17-2003, 01:49 AM
Thanks Christy. Doesn't look like the Mercury Vapour ballasts burn the bulb any whiter than the MH ballasts. What are you using for actinic supplementation?
christyf5
06-17-2003, 03:31 AM
Ya I don't think there is much difference between the ballasts either. I have 2x40W NO Phillips 03 actinics. Sorry I didn't include that info earlier :rolleyes: :wink:

Christy :)
Jack
06-17-2003, 03:50 AM
..and VHO looks much better :wink: :lol:
christyf5
06-17-2003, 04:15 AM
Whatever, Jack :razz: :biggrin:
Jack
06-17-2003, 04:17 AM
:lol:

i tells ya, you're missin out :mrgreen:
christyf5
06-17-2003, 04:20 AM
Sure sure. Next time I win the lottery I'll definitely get one. Last time I won I spent it all on hot cars and fast men. :p
Bryan
06-17-2003, 04:41 AM
Ya I don't think there is much difference between the ballasts either. I have 2x40W NO Phillips 03 actinics. Sorry I didn't include that info earlier :rolleyes: :wink:

Christy :)

Wow, just 80 watt's of actinic's sure makes a big difference in the color.
christyf5
06-17-2003, 04:45 AM
Ya, I really like the white I get from the 80W actinic. The yellow from the iwasaki bulbs is pretty crusty especially with these non-R ones. I did have the R bulbs running without actinic for awhile when I was having some rust problems and it looked okay but the supplemented actinic really get the job done. I don't know about VHO though, or if I'd do dual VHO. I'm just not into the real blue look I guess. Maybe someday when I win the aforementioned lottery or I have some spare cash.

Christy :)