300 volts output without a lamp operating is normal and within specs for an M58 ballast. The normal range is 270-350 volts. This is still not enough to fire a Radium bulb properly which requires a minimum 4.0kV (4000V) ignition voltage.
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Correct. I’ve seen that and questioned it in this discussion. Others said to run it.
The reason this is even an issue is I cannot find mogul base 250w bulbs that are not Radion. This is what I was saying earlier about bulbs being hard to find.
I checked BRS, soslightbulbs, championlighting, Amazon, and Hamilton. The only 250w mogul are Radions. If anyone knows where to find these that are not Radion let me know.
Perfect! I didn’t think to look at the Ushio website. I know those are good bulbs. Just ordered one and was able to cancel the Radium from BRS. I emailed them last night after the post about Radiums not working with my M58 or electronic ballast.![]()
Aquarium
USHIO Aqualite™ Metal Halide lamps feature the best combination of color balance, color rendering and photosynthetic light output for healthy marine aquarium and reef systems. Our USHIO BLV factory in Germany, collaborated with leading marine biologists to develop the first 10,000K Metal Halide...estore.ushio.com
Just want to say thanks to those that talked me in to keeping my metal halides. The ushio bulb came in and fired up right away. The tank looks fantastic! Nothing like halides!
Over the past few days I built a custom canopy with the halides in mind. The canopy stands 18” off the tank so when the halide fixture was mounted inside the bulb is about 12” off the water. I left the top open to all the heat from the halide to escape.
Mounted directly center over the tank at about 12” off the water this halide gives great coverage to my 4’ 90 gallon tank.
Next I’ll paint the stand to match the canopy (using lots of tape as the tank is setup so it will be painted in place) and it’ll be good to go!
Thanks again to all for the advice and help. I will be ordering these Ushio bulbs again.View attachment 3114909View attachment 3114910View attachment 3114911View attachment 3114912
You can, they just didn’t have the 250w single ended in stock right now.I think you can buy bulb directly from Hamilton. I thought they are about 60.00 or so.
Oops. I guess they have them in stock now.View attachment 3114973
I just added a single ended 250 W MH 10,000K bulb to my cart. 65.00
Go to check out. That’s where it tells you it’s out of stock.View attachment 3114973
I just added a single ended 250 W MH 10,000K bulb to my cart. 65.00
What kelvin bulb is the ushio? I really like that look.
There are multiple bulbs on that web page. I’m asking which one bdupuy went with.![]()
Aquarium
USHIO Aqualite™ Metal Halide lamps feature the best combination of color balance, color rendering and photosynthetic light output for healthy marine aquarium and reef systems. Our USHIO BLV factory in Germany, collaborated with leading marine biologists to develop the first 10,000K Metal Halide...estore.ushio.com
Sorry, by the looks of their earlier post, it shows 10k in the cart. If you have supplemental blue bars/T5’s, then either 10k or 14k will do the job nicely. I prefer 14k myself.There are multiple bulbs on that web page. I’m asking which one bdupuy went with.
This is a Ushio 20,000K bulb. I really like the look of it. In the past I've had a 14,000K from Hamilton and I much prefer the look of this 20,000K. It's much brighter and cleaner looking in my opinion. No supplemental lighting in these pictures, only the MH.What kelvin bulb is the ushio? I really like that look.
Yea, LEDs certainly do bring out some great fluorescence when coupled with Halides. Though it is possible under perfect conditions to pull out authentic vivid colorations under 10k/14k lighting.Two things, when I bought 24 Hamilton DE 14k and 20k bulbs, I was told Hamilton would have new stock in March. Well, that came and went and I still don't see new stock.
Second, when I was running MH only, 14k, my Acro colors were not good at all. Their health was excellent, but no color and certainly no blue color. I added the LEDs and everything colored up nicely.
I don't think this had anything to do with spectrum, but the light intensity. When I added a lot of LEDs and higher par, they colored up nicely. So just keep that in mind as you go along.