changing from 20k to 14k bulbs?

Chipie · 02/01/2010, 04:38 PM

I presently have 3 20k bulbs that are about 6 months old that i would like to change for 3 phoenix 14k bulbs for better growth. Should i raise my fixture a bit or would it be ok just like that ? If so, how much higher? Have an idea?

nano427 · 02/01/2010, 05:56 PM

what bulbs are you running now?

Chipie · 02/01/2010, 05:58 PM

Giesemann 20k

Chipie · 02/02/2010, 11:01 AM

anybody?

stanlalee · 02/02/2010, 11:06 AM

no, phoenix arent 14k bulbs even though they are labelled as such and have decent PAR. the color wont be much different than the current 20k's your using (those are speculated to be rebadged Ushio/BLV 20ks). I dont think you need to take any special precautions with that switch. anytime you switch to fresh bulbs unless you buy something inferior there is going to be a boost in PAR. If you were going with like an XM10k then I'd reacclimate but not for your change.

Chipie · 02/02/2010, 11:08 AM

Aren't the giesemann supposed to be low par and the phoenix high par? I tried to look for the par of both bulbs but can'y find it. Sanjay's web pages only talk about ccd or something like that but i just don't understand what he's talking about. And i haven't found anything on the phoenix 14 de bulb , only the 10k

02/01/2010, 04:38 PM	#1
Chipie Registered Member Join Date: May 2007 Location: Shippagan,New-Brunswick, Canada Posts: 1,116	changing from 20k to 14k bulbs? I presently have 3 20k bulbs that are about 6 months old that i would like to change for 3 phoenix 14k bulbs for better growth. Should i raise my fixture a bit or would it be ok just like that ? If so, how much higher? Have an idea? __________________ Lobster fisherwoman. Current Tank Info: 90g rimless reef

02/01/2010, 05:58 PM	#3
Chipie Registered Member Join Date: May 2007 Location: Shippagan,New-Brunswick, Canada Posts: 1,116	Giesemann 20k __________________ Lobster fisherwoman. Current Tank Info: 90g rimless reef

02/02/2010, 11:01 AM	#4
Chipie Registered Member Join Date: May 2007 Location: Shippagan,New-Brunswick, Canada Posts: 1,116	anybody? __________________ Lobster fisherwoman. Current Tank Info: 90g rimless reef

02/02/2010, 11:08 AM	#6
Chipie Registered Member Join Date: May 2007 Location: Shippagan,New-Brunswick, Canada Posts: 1,116	Aren't the giesemann supposed to be low par and the phoenix high par? I tried to look for the par of both bulbs but can'y find it. Sanjay's web pages only talk about ccd or something like that but i just don't understand what he's talking about. And i haven't found anything on the phoenix 14 de bulb , only the 10k __________________ Lobster fisherwoman. Current Tank Info: 90g rimless reef Last edited by Chipie; 02/02/2010 at 11:22 AM.

02/01/2010, 05:56 PM	#2
nano427 Registered Member Join Date: Oct 2008 Location: AV OC CA USA Posts: 877	what bulbs are you running now?

02/02/2010, 11:06 AM	#5
stanlalee Registered Member Join Date: Aug 2006 Location: hampton roads, va Posts: 1,799	no, phoenix arent 14k bulbs even though they are labelled as such and have decent PAR. the color wont be much different than the current 20k's your using (those are speculated to be rebadged Ushio/BLV 20ks). I dont think you need to take any special precautions with that switch. anytime you switch to fresh bulbs unless you buy something inferior there is going to be a boost in PAR. If you were going with like an XM10k then I'd reacclimate but not for your change.