Lighting Website Updates

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Sanjay,

What is your opinion on the EVC 10000K without actinic supplementation? I'm currently running a Phoenix 14K 250w DE on an IceCap, but I want an easy way to get more PAR output, without the heat and extra watts of an HQI magnetic ballast. So I'm considering switching to the EVC 10000K DE. I really don't have the room for actinic supplements in my tank, so I want to run just with the halide.
 
I run all my tank without any actinic suppliments, and I am perfectly happy with it and so are my corals :-)

On my home tank I am running 1X400W EVc 10K, and 2X250W BLV DE lamps in a reef optix III reflector. On the penn state tank we are running 4X400W EVC 10K lamps with lumen arc reflectors.

I yanked out the actincs several years ago and am enjoying the reduction in lamp replacemetn costs and additional electricity costs. The corals are all doing fine and color up nicely.

sanjay.
 
Sanjay, IIRC you were previously running XM10k's. May I ask why you switched to EVC10k's seeing as how they have less PAR?
 
Sanjay - I would like to see testing on several different 175 watt bulb when you have time - Blueline 10K, Hamilton 10K, XM 10K, Coralvue 10K
 
Thanks Sanjay. I'm tempted to pick up an EVC 250w 10K for my tank. I like the look of the penn state tank, and there is some italian tank I saw on here that looked great with the EVC 10K.
 
Travis said:
Sanjay, IIRC you were previously running XM10k's. May I ask why you switched to EVC10k's seeing as how they have less PAR?
Click to expand...

The PAR is not lower on the EVC running on the Magnetic ballast. The reason for switching out the XM was related to quality issues, we had 2 lamps crack and one switch color on the penn state tank. We had bought them when they first came out. They had some quality problems with glass thickness which seem to have now been fixed. They were kind enough to replace the lamps.

sanjay.
 
grigsy said:
Sanjay - I would like to see testing on several different 175 watt bulb when you have time - Blueline 10K, Hamilton 10K, XM 10K, Coralvue 10K
Click to expand...

I will get around to these lamps sometime this summer. I need to compile a list of the available lamps and ballasts for these lamps and start acquring the lamps. I do not use 175Ws anywhere and have lost track is what is out there.

Can you make up a complete list of all the 175W lamps and ballast out there ?

sanjay.
 
Sanjay,

If you seriously would like a list of all the lamps and ballasts I have a lot of time on my hands. I could put together a list of all the popular wattage lamps and ballasts I can find on the net. Let me know.
 
Hey, we need to finish tests / making a list of all the 250watters out there first! Who still uses 175s anyways? Their output is dismal. Most 250watters have double the output of a 175 for just an extra 75watts...
 
The Grim Reefer said:
Sanjay,

If you seriously would like a list of all the lamps and ballasts I have a lot of time on my hands. I could put together a list of all the popular wattage lamps and ballasts I can find on the net. Let me know.
Click to expand...

What makes you think I am not serious ?:)

It will take some time to acquire all the lamps and ballast and then burning them in for 100 hr each.

The testing part is relatively shorter.

sanjay.
 
Well what do you want first, 150 or 175 watts? I got plenty of time to do the grunt work of finding what's out there if that gives you more time to buy and test the stuff:)
 
The Grim Reefer said:
Well what do you want first, 150 or 175 watts? I got plenty of time to do the grunt work of finding what's out there if that gives you more time to buy and test the stuff:)
Click to expand...

Lets go with the 175W since those are the ones I have the least amount of data on.

sanjay.
 
Sanjay- First, I'd just like to say thanks for all the time and effort you've put into the testing of all the MH reef lighting you have documented over the years. I know it serves as a very important knowledge base for anyone interested in trying to create an optimal reef environment.

I heard you presented data on different bulbs' spectrum changes over time. A friend of mine in CMAS (Maryland) attended the presentation you gave the same day as Steve Tyree and said that you showed data proving that some 20K bulbs lose most of their PAR after a few months of use because most of their light output is concentrated in the narrow spectrum 440-460nm range and this large "spike" falls off very quickly, while 10K bulbs are more full spectrum and maintain a higher level of PAR over a longer period.

I would definately like to learn more on this subject. I would really like to know how long bulbs really "last", and which bulbs provide the highest CCT with the least loss of PAR over time. I personally really like the look of 20K bulbs (especially the XM's) but I don't want to lose most of my avalible light a few months after installing them.
 
Has anyone done a study of which 250W DE bulb holds its color spectrum the longest? (Longest lasting usable light)
 
To do this right would take a lot of effort and coordination. But we could get some estimates of what the light output is from lamps after they have been used. I am gradually collecting data from used lamps sent to me by hobbiest, so at least I will have some information on what the is final par of these lamps (not knowing the initial par).

sanjay.
 
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