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midnightmadman
03/14/2017, 07:06 AM
Does anyone think 175watt MH in a 10k would be enough light to keep zoanthids and polyps 6" above a 90 gallon? or would it not be enough light?

sde1500
03/14/2017, 08:32 AM
What light specifically? Thats more important than watts really. Could be a black box that gives plenty of coverage or a kessil with enough power but probably lacking in coverage.

midnightmadman
03/14/2017, 09:05 AM
What light specifically? Thats more important than watts really. Could be a black box that gives plenty of coverage or a kessil with enough power but probably lacking in coverage.

I'm speaking of Mogul base metal halide

becon776
03/14/2017, 10:58 AM
Umnm hell yes. You will be VERY fine. Dont listen to half these guys. MH blow all others out of the water including radions. Before you listen to anyones advice check their join date. If in the last ten years then odds are they dont have the personal experience to speak on MH.

NOW before everyone gets offended... it is true NOTHING CAN COMPETE with MH. In terms of growth, intensity and punch thru to depth, and shimmer. You pay for that BIGTIME with heat, electric bill, and bulb cost.

OP. you will be fine growing zoa, lps, and softy with 175 mh over a 90. If it was the shorter 75 gall then id say its too much light.

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midnightmadman
03/14/2017, 11:13 AM
Umnm hell yes. You will be VERY fine. Dont listen to half these guys. MH blow all others out of the water including radions. Before you listen to anyones advice check their join date. If in the last ten years then odds are they dont have the personal experience to speak on MH.

NOW before everyone gets offended... it is true NOTHING CAN COMPETE with MH. In terms of growth, intensity and punch thru to depth, and shimmer. You pay for that BIGTIME with heat, electric bill, and bulb cost.

OP. you will be fine growing zoa, lps, and softy with 175 mh over a 90. If it was the shorter 75 gall then id say its too much light.

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I put my 4-bulb T5 fixture back on after the heat from my MH. I was running my duel 175's but that's why I am asking about switching back to only (1) 175 MH

becon776
03/14/2017, 11:20 AM
IME ur zoa's will do much better under fluorescent bulbs. Id stay with the t5's. My fixture is 2x250de mh and 4x54 t5. I let the t5s be the workhorses and use the MH as "high noon" 4-5 hrs. I will swap as my sps begun to dominate. But i have mixed reef and a lot of light for a short tank (75). t5 will work fine for polyps.

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sde1500
03/15/2017, 10:28 AM
Umnm hell yes. You will be VERY fine. Dont listen to half these guys. MH blow all others out of the water including radions. Before you listen to anyones advice check their join date. If in the last ten years then odds are they dont have the personal experience to speak on MH.

NOW before everyone gets offended... it is true NOTHING CAN COMPETE with MH. In terms of growth, intensity and punch thru to depth, and shimmer. You pay for that BIGTIME with heat, electric bill, and bulb cost.

OP. you will be fine growing zoa, lps, and softy with 175 mh over a 90. If it was the shorter 75 gall then id say its too much light.

Sent from my SM-G935T using Tapatalk

Pretty rude and dismissive of you to say to flat out ignore someone based on join date. I said nothing regarding MH, and wouldn't because I don't have experience. Not sure why you feel the need to say that though.


And light is light, obviously the debate is more than played out, but what actual evidence do you have that one light source somehow manages better than another?

I will edit to say I completely missed the Mh in the original post, and wouldn't have bothered commenting if I had seen it.

becon776
03/15/2017, 10:46 AM
Hmmmm... ok i get it. Just so many people ate on here with their new fancy radions that they dropped beacoup bucks on and i have gotten flamed for no reason before. AND usually by people who havent been reefing for more than 3 years.
Light is NOT light. Halide is the gold standard. It is a white hot burn.... led dont burn. But the sun does. Every coral i get that was grown under led bleaches out under 250's until it acclimates and after a month i usually get colors that the person didnt even know they had.
Trust i wish this tech would overtake mh. Badly. When i see 10,000 gallon zoo tanks use led ill switch.

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AlSimmons
03/15/2017, 04:34 PM
Does anyone think 175watt MH in a 10k would be enough light to keep zoanthids and polyps 6" above a 90 gallon? or would it not be enough light?

What are the dimensions of that 90 gallon tank? For some reason I think they're pretty deep. The polyps at the top of the rock structure will probably be ok, but the ones down on the bottom might struggle a bit.

midnightmadman
03/16/2017, 02:41 PM
What are the dimensions of that 90 gallon tank? For some reason I think they're pretty deep. The polyps at the top of the rock structure will probably be ok, but the ones down on the bottom might struggle a bit.

48x24
I ended up putting the two 175 back on today!

reefwars
03/26/2017, 08:14 AM
I'm running 2 x 175w but went with 20k bulbs


I'm also shallow tank so light is mounted up high but personally I think you'd be fine , on 4ft your going to want at I east two bulbs though


http://i1374.photobucket.com/albums/ag409/polypz/frag%20paks/20170318_112235_zpslmiqwiii.jpg (http://s1374.photobucket.com/user/polypz/media/frag%20paks/20170318_112235_zpslmiqwiii.jpg.html)


http://i1374.photobucket.com/albums/ag409/polypz/frag%20paks/20170324_115735_zpsc8kfbd7z.jpg (http://s1374.photobucket.com/user/polypz/media/frag%20paks/20170324_115735_zpsc8kfbd7z.jpg.html)


http://i1374.photobucket.com/albums/ag409/polypz/frag%20paks/20170324_115514_zpsl3vewny0.jpg (http://s1374.photobucket.com/user/polypz/media/frag%20paks/20170324_115514_zpsl3vewny0.jpg.html)

midnightmadman
03/26/2017, 10:15 AM
wow that's amazing!
If those bulbs are 20k why does the tank look so 'natural' The spectrum looks more like 10k or lower.
I would love to make something like your setup

midnightmadman
03/26/2017, 10:16 AM
Oh. Also. My tank is a 90 that is 21" tall not 24. My mistake

reefwars
03/26/2017, 10:29 AM
wow that's amazing!
If those bulbs are 20k why does the tank look so 'natural' The spectrum looks more like 10k or lower.
I would love to make something like your setup



Probably the height their about 20" above surface , if you read my journal you'll see I had a 6bulb tek light on their before and the halides are IMO much better suited for me , love the pendant look and the halides have that more natural feel

I ran a 250w on a small 25g cube with great success so too much light is debatable but too little can definitely be a factor so just make sure your getting enough bang for your buck , at 20" in height you would be in good standing with your halides

Zoahoarder
03/27/2017, 07:08 AM
I've got a 250w halide on my deep blue 30g tank. Absolutely love it. It's about 13" above the water line so I don't kill anything cause the tank is only 12" deep.
http://i1122.photobucket.com/albums/l526/lilmatty5dimes/Deep%20Blue%20Rimless/9B3DF5B5-E776-4055-BFC7-F7C1782A1F53_zpslpgio466.jpg (http://s1122.photobucket.com/user/lilmatty5dimes/media/Deep%20Blue%20Rimless/9B3DF5B5-E776-4055-BFC7-F7C1782A1F53_zpslpgio466.jpg.html)

midnightmadman
03/28/2017, 07:21 AM
I've got a 250w halide on my deep blue 30g tank. Absolutely love it. It's about 13" above the water line so I don't kill anything cause the tank is only 12" deep.
http://i1122.photobucket.com/albums/l526/lilmatty5dimes/Deep%20Blue%20Rimless/9B3DF5B5-E776-4055-BFC7-F7C1782A1F53_zpslpgio466.jpg (http://s1122.photobucket.com/user/lilmatty5dimes/media/Deep%20Blue%20Rimless/9B3DF5B5-E776-4055-BFC7-F7C1782A1F53_zpslpgio466.jpg.html)

is that 20k bulb? looks extremely blue

Zoahoarder
03/30/2017, 05:26 PM
is that 20k bulb? looks extremely blue

Yup. Radium 20k.

jda
04/01/2017, 04:15 PM
Heat problems are easily taken care of by a fan unless you live in Arizona, some parts of Cali, Houston or Florida and don't have AC. Just turn a fan on over the top of the water when the MH come on and they never really have a chance to get hot.

BTW - this will be more than enough light for most things. A higher K bulb with less IR spectrum can also keep the heat down.