I'm wondering if I could use these as lights over my tank? They are 400 watt MH.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.


I'm not sure to be honest, they look like they were used as shop lights. Didn't know if it was worth the effort to try and use these on the tank. They are cheap, so I was just curious.Wow, I'm not trying to be funny-- are those for theatrical stage lighting? Or a basketball court? I'm trying to imagine hanging them, so they don't ever come crashing down on your tank. Inquiring minds want to know!![]()
Thanks, I was just curious. They are selling them for cheap. Didn't know if it was worth the effort or not to convert these to use on the tank. I don't really know much about the specs on these lights, but I'll just pass on them. I have been interested for awhile on trying MH but didn't want to invest a ton of money in case I didn't like them or not a good fit for my tank. I appreciate the feedback. How are you liking your Noopsyches? That is what I run on my tank. I've tried several different brands, but really fell in love with the spectrum of those lights. I now run a total of 5 of them and really happy.
Comparison..I'm not sure to be honest, they look like they were used as shop lights. Didn't know if it was worth the effort to try and use these on the tank. They are cheap, so I was just curious.
Yes, that guy is awesome. I've been watching his thread. I've downloaded the app, but I've not had time to play with it yet. To be honest, I don't find the Noop app to be as terrible as everyone makes it. It's definitely the worst one I've used, but it's not impossible to navigate like some make it out to be. Glad you found your sweet spot in lighting, it took me awhile to find one I was happy with.I love my noops. But I was reefing 20 years ago and always missed my halides. The combo of these new 10k CMH and the noops take me back to the 12-14k halide days.
I had 5 noops over my 210. Three were v2 pros and two v3s. I planned on selling them and upgrading to 8 of the IV pros but decided to test the halides out.
I am not happy with the combo on my 210 currently. I did the halides and cheap actinic bars from 21led and it’s no where enough actinic blue to offset the 10k. Tank looks yellow and dingy.
When I set up the 54g I wanted to go heavy on the sps decided to try the two k7 IV and the halide and I am in love!!! I will replacing the led bars on the 210 with K7 IV eventually.
Can’t beat the price for the noops at $139 each. There is a guy on here that has Basicly hacked the WiFi and built a new app to control the noops. Going to be playing with that soon
After watching your threads, it was that inspiration that I started looking for them online lol. These happen to have popped up on marketplace and was just curious. Didn't see any specific to reefing. I'm going to keep looking though. I've seen enough evidence that MH can't really be replaced.They would work but not worth the effort. I have looked at a few of these types in the past and always passed. Maybe in a garage type setting but not in my living room, lol.
Look for a used MH fixture. Many just give them away now. I have several types and run a Lumenbrite with a 400 watt 20K bulb.
![]()
The app works for me okay, I get tired of having to change my wifi network to connect to the app.Yes, that guy is awesome. I've been watching his thread. I've downloaded the app, but I've not had time to play with it yet. To be honest, I don't find the Noop app to be as terrible as everyone makes it. It's definitely the worst one I've used, but it's not impossible to navigate like some make it out to be. Glad you found your sweet spot in lighting, it took me awhile to find one I was happy with.
Wondering if you still know the brands youI would look at the voltage. A lot of the high bay lights may run multi tap ballasts. Not many parts are useable.
in my opinion the reflectors are not going to do anything good for you with how bulky they are. the balast can be used possible along with the sockets.
I personally wouldn't waste the time. i have converted these fixtures for use and its a bunch of work.
what kelvin bulbs are you looking at running?
I have started to use the newer 315W Ceramic Metal halides found in hydroponics, they have adjustable output ballasts. 50/75/100/110% setting but the highest kelvin bulb is only a 10k.
With the stock reflectors @ 50% setting( approx 204W) I am seeing 540par half way down my 24" tall tank. 240 on the sand bed and 780 2" from surface measured with an apogee 420x.
At 100% in the same spots I measured half way down 730, sand bed 400, 1080 2" below.
I am running Noopsyche k7 IV for blue supplemental
I run 1 over my 54g corner with 2 noops
And 3 over my 7’ 210.
paid $150 for 5 MH fixtures and $59 for each bulb on amazon.
don't mind the cloudiness of the tank, only had water in it for 2 hours before i pulled out the apogee. couldnt help myself
![]()
![]()
![]()
![]()
Just noticed these pics. The coloring looks really good.I would look at the voltage. A lot of the high bay lights may run multi tap ballasts. Not many parts are useable.
in my opinion the reflectors are not going to do anything good for you with how bulky they are. the balast can be used possible along with the sockets.
I personally wouldn't waste the time. i have converted these fixtures for use and its a bunch of work.
what kelvin bulbs are you looking at running?
I have started to use the newer 315W Ceramic Metal halides found in hydroponics, they have adjustable output ballasts. 50/75/100/110% setting but the highest kelvin bulb is only a 10k.
With the stock reflectors @ 50% setting( approx 204W) I am seeing 540par half way down my 24" tall tank. 240 on the sand bed and 780 2" from surface measured with an apogee 420x.
At 100% in the same spots I measured half way down 730, sand bed 400, 1080 2" below.
I am running Noopsyche k7 IV for blue supplemental
I run 1 over my 54g corner with 2 noops
And 3 over my 7’ 210.
paid $150 for 5 MH fixtures and $59 for each bulb on amazon.
don't mind the cloudiness of the tank, only had water in it for 2 hours before i pulled out the apogee. couldnt help myself
![]()
![]()
![]()
![]()
What's the reasoning behind using those bulbs?Brand of the bulbs? Vegelumax
Appoligive for the dirty tank. I rarely actually scrape the glass.
The newer ceramic metal halides use a different socket then the old screw in ones.
I am running fixtures and ballasts meant for hydroponics. The bulbs are meant for the final flowering stage in growing.
The bulbs are vegelumax 10000k 315w cmh
You need to have supplemental lighting to overcome the yellow of the 10k bulbs. I don’t have enough supplemental on the big tank yet. Will be adding 3 Noopsych K7 iv eventually
More THC production .What's the reasoning behind using those bulbs?

I may or may not have have some growing in the backyard.More THC production .![]()