Brigtness between 150w & 250w

lee 1980 · 09/11/2009, 06:18 AM

I have a 150w guiesmann nova on my 26" cube with 1 white aquaray & 2 blue aquarays.........but it seems a bit dull during the day to me...........Now i know that a 250W will penetrate deeper down but is there much difference in brightness?

scubanoah24 · 09/11/2009, 09:04 AM

par will be much higher with the 250

lee 1980 · 09/11/2009, 09:17 AM

Yes i know that what i'm asking is............is there a difference in brightness between a 150w & 250w

I know the par reading will be alot higher & that the light can penertrate deeper

kikireef · 09/11/2009, 10:27 AM

I will be upgrading my (4) 96 watt 50/50 bulbs soon to (3) 250w 14k hallides in the near future. I will still use (2) of the 96w pc's for acintics. I have all softies but would like sps in the future which is the reason for the upgrade. My question is what is the best way...once done...to aclimate my tank/corals to the new light? I assume reducing the photo period but how much? Also should I plan to have a hanging canopy where I have a lot of room above. Should I raise it high and lower it slowly until I reach the proper height?

Rickyrooz1 · 09/11/2009, 10:37 AM

Quote:

Originally posted by lee 1980
Yes i know that what i'm asking is............is there a difference in brightness between a 150w & 250w

I know the par reading will be alot higher & that the light can penertrate deeper

I think you answered your own question. Since there is more PAR and deeper penetration, yes there will be more brightness. The difference between a 150w and 250w is noticeable in person.

Nerdy Nudi · 09/11/2009, 01:07 PM

yes and no

depends on your bulb. for example a 150w radium will create about the same amount of par as a 250w ushio 20k.

so lets say your fav bulb was the ushio, and you were thinking of upgrading to get more par, it might be worth considering a different bulb to get that par without the extra heat/ec cost.

09/11/2009, 06:18 AM	#1
lee 1980 Registered Member Join Date: Aug 2009 Location: England Posts: 42	Brigtness between 150w & 250w I have a 150w guiesmann nova on my 26" cube with 1 white aquaray & 2 blue aquarays.........but it seems a bit dull during the day to me...........Now i know that a 250W will penetrate deeper down but is there much difference in brightness?

09/11/2009, 10:27 AM	#4
kikireef Registered Member Join Date: May 2009 Location: Chino at The Preserve Posts: 1,107	I will be upgrading my (4) 96 watt 50/50 bulbs soon to (3) 250w 14k hallides in the near future. I will still use (2) of the 96w pc's for acintics. I have all softies but would like sps in the future which is the reason for the upgrade. My question is what is the best way...once done...to aclimate my tank/corals to the new light? I assume reducing the photo period but how much? Also should I plan to have a hanging canopy where I have a lot of room above. Should I raise it high and lower it slowly until I reach the proper height? __________________ Keith SCMAS Member Tank Info: 120 gallon 48"x30"x20" Leemar Rimless. 2 MP40w, 1 MP10w, SROsss Skimmer, ATI Sunpower 8x54w, Neptune Apex Controller with WXM module. 2 BRS dosing pumps. Check my homepage for the build...

09/11/2009, 09:04 AM	#2
scubanoah24 Registered Member Join Date: Apr 2006 Location: columbus, ohio Posts: 58	par will be much higher with the 250

09/11/2009, 09:17 AM	#3
lee 1980 Registered Member Join Date: Aug 2009 Location: England Posts: 42	Yes i know that what i'm asking is............is there a difference in brightness between a 150w & 250w I know the par reading will be alot higher & that the light can penertrate deeper

09/11/2009, 01:07 PM	#6
Nerdy Nudi Registered Member Join Date: Feb 2009 Posts: 473	yes and no depends on your bulb. for example a 150w radium will create about the same amount of par as a 250w ushio 20k. so lets say your fav bulb was the ushio, and you were thinking of upgrading to get more par, it might be worth considering a different bulb to get that par without the extra heat/ec cost.