Negative, an M80 is a magnetic HQI ballast. It's designed to run the HQI (DE) bulb to its full capacity.

Ok, I'm glad I asked, but my description was incomplete. The ballast is described on their site an as Oceanballast M 250 HQI. So the magnetic 250 HQI ballast can be considered as an M80?

[QUOTE][i]Originally posted by Aquatic Hamster [/i]
[B]Ok, I'm glad I asked, but my description was incomplete. The ballast is described on their site an as Oceanballast M 250 HQI. So the magnetic 250 HQI ballast can be considered as an M80? [/B][/QUOTE]

Yes.

Thank you. :)

So, can a standard magnetic ballast, like a 250 watt PFO, run a 250 watt DE bub?

[QUOTE][i]Originally posted by causeofhim [/i]
[B]So, can a standard magnetic ballast, like a 250 watt PFO, run a 250 watt DE bub? [/B][/QUOTE]

no

Sanjay, good evening.

I read a thread somewhere that stated bulbs 10k and higher don't need a UV lens; that they come with UV protection in the glass they're made of already. I can't find the thread, so can you please shine some light on this matter for me. I have a deep tank already and would hate to lose PAR with the additional of the lens.

Thank you in advance,
Lou

Lou:

With the moguls the outer envelope is the UV shield and you do not need any additional shield, unless you want to protect the reflector from splashes and salt spots.

With the Double Ended Lamps.. it is recommended to use a UV shielding glass.

Hope this answers your question.


sanjay.

I have a bulb manufacturer question,

I have a phoenix bulb that clearly says on the bulb
Phoenix MH-250W/TD/B

I have another bulb that says on the bulb
PEC Lamp MH-250W/TD Blue

These bulbs are almost identical in appearance. The PEC bulb was sold to me as a Phoenix bulb. Are the PEC and Phoenix the same?

I do not know if the PEC = Phoenix, yet. I have a couple of lamps sitting to be tested that say PEC on the box, but the lamps themselves do not say PEC.

sanjay.

Sanjay, thanks for the quik response.

Lou

[QUOTE][i]Originally posted by Sanjay [/i]
[B]I do not know if the PEC = Phoenix, yet. I have a couple of lamps sitting to be tested that say PEC on the box, but the lamps themselves do not say PEC.

sanjay. [/B][/QUOTE]

I have sent this question to PEC Lamp Company USA. PEC Lamp appears to be a USA affiliate to PHOENIX Electric Co with worldwide headquarters in Japan. I've asked them to confirm they are the same bulbs. The PEC box does clearly say Made In Japan.

Could someone confirm for me that their Phoenix 14k bulbs look like this.

[url]http://web.tampabay.rr.com/mybeach/[/url]

I've found pictures online that don't look like these. And according to the PEC site Phoenix only makes two of these bulbs, a 10000k and a 4200k.

My bulbs look like the 4200k picture on the PEC web site.
[url]http://store.peclamp.com/40027j.html[/url]

The 10000k bulb has different ends.
[url]http://store.peclamp.com/40025j.html[/url]

I am now so confused.

[QUOTE][i]Originally posted by Aquatic Hamster [/i]
[B]Could someone confirm for me that their Phoenix 14k bulbs look like this.

[url]http://web.tampabay.rr.com/mybeach/[/url]

I've found pictures online that don't look like these. And according to the PEC site Phoenix only makes two of these bulbs, a 10000k and a 4200k.

My bulbs look like the 4200k picture on the PEC web site.
[url]http://store.peclamp.com/40027j.html[/url]

The 10000k bulb has different ends.
[url]http://store.peclamp.com/40025j.html[/url]

I am now so confused. [/B][/QUOTE]

The double ended bulbs should all have the same ends. The standard DE ends are Fc2.

sanjay.

Sanjay,
I have some 250 watt Hamilton 5500k's that came with my set-up. I was thinking of trying them out on a prop/frag tank. Any idea how the PAR would be with these? Would the growth be similar to with the 6500k?
Thanks

[QUOTE][i]Originally posted [/i]
[B] I do not know if the PEC = Phoenix, yet. I have a couple of lamps sitting to be tested that say PEC on the box, but the lamps themselves do not say PEC. sanjay. [/B][/QUOTE]

For anybody that is interested, this is the reply I got from PEC concerning PEC and Phoenix bulbs.

Dear Sir,

Thank your for your inquiry.
Yes, the Phoenix lamp and PEC products are exactly the same.
Just to let you know, Phoenix is our head office in Japan, and all of the
blue metal halide lamps are made in our factory in Japan. Thus, they will have the same spec.
[url]http://www.peclamp.com/aboutpec.htm[/url]

I have an Aqua Medic Ocean Light. 36", 2-250W DE MH 10K Aqualine lamps w/ 2-T5 Super Actinic Blue Tubes.

MH's been working for about 9 months now. Thinking it may be time to replace. I've been told by a couple Coral Websites that I should go to a 20K. Opinions? Brand to go with?

My tank is 25" deep to the surface of the sand bed. SPS, Acopora, and shortly would like to throw in a clam......Thanks, Tim

It might be worth it to look at different T5's first. Blueplus from ATI or Actinic Plus from D&D are a very blue lamp that is supposed to do well at bringing out the colors in SPS. If you like the look of those running with your current 10K I would just get new 10K's rather than going 20. You lose a lot of PAR with the higher K lamps. If you just gotta have a Bluer halide I would go with a 14K Phoenix. Reasonably cheap, lotsa PAR and slightly blue color that fluoresces the corals pretty well without actinics.

Dual 250s on a 65 AND T5s? Wow. Thats enough to run a tank almost twice as large. I would look at going bluer if nothing else but to lower the output a bit before your fish go blind and your corals brown out. Sounds like you could use a little less PAR...or at least have some to spare. Seriously, thats alot of lighting for a 65.

The tank is 25" to the sandbed. Not a lot of light to spare even though there are 2 lamps covering the 36" length.

Grim Reefer- Do you have a website for D & D and ATI. I tried doing a google search and nothing seemed to match. Listed all kinds of lighting websites.

On my T5 box, it says Ocean Blue Actinic by Aqua Medic. Are you saying this lamp could/should be bluer if I stay with my same lamp? Thanks, Tim---- Also, the Giesemann mega chrome and XM are not rated well in your opinion?

Here is a chart some of you were requesting in another thread. You know I can't have every thing on the web, other wise there would be nothing new to present and no one would want to invite me to talk to thier club :D

sanjay


[IMG]http://www.personal.psu.edu/sbj4/aquarium/other-pics/all-lamps.gif[/IMG]

Sanjay,

Thanks.....PPFD? Par Per Foot of Depth?? Just Guessing. Does shielded mean Chrome bulb? And do you have a fav lamp brand? Is Aqualine low or high on your fav list? Thanks for your time. Tim

The lighting terms are all defined in the very first article I wrote.

[url]http://www.personal.psu.edu/faculty/s/b/sbj4/aquarium/articles/MetalHalideLamps1.htm[/url]

"The units for PAR can be specified in energy terms or in photon terms. In energy terms, PAR is expressed as PAR Irradiance, which is the total energy in the PAR range (400 nm to 700 nm). The units of PAR Irradiance are watt/m2. When measured in photon terms, PAR is also called Photosynthetic Photon Flux Density (PPFD), which is a measure of the number of photons in the 400 nm to 700 nm waveband that are incident per unit time on a unit surface. When expressed in photon terms, all the photons are considered equal, independent of their energy. The quantity of photons is measured in moles of photons (1 mole of photons = 6.022 x 1023 photons = 1 Einstein). In practice, PPFD is measured in microEinstein/m2/second, or µE/s*m2. "

Shileded means that the readings were taken with a UV absorbing Glass Shield (recommended for double ended lamps).

sanjay.

PPFD?