best t5ho 2 bulb combos for supplimental lighting?

RuGlu6 · #1 03-21-2009, 11:34 PM

The only thing is that Actinic plus will loose its blue intensity in about 6 month. true Actinics will hold it for about 9 month

fiorano · #2 03-22-2009, 02:48 AM

i have aquaconnect 14k's with 1 54w actinic+ and 1 54w fiji purple and it looks great... much better than it did with just 2 actinic+

Myka · #3 03-22-2009, 03:04 AM

I find the Fiji Purples to actually be quite pinkish/reddish/purple. I wouldn't want to run exclusively Fiji Purples for supplemental lighting. I would go with a UVL Actinic as they have a much higher PAR than Giesemann True Actinic. Both bulbs are 420 nm. I'm not a fan of Giesemann bulbs due to poor PAR values as well the whole bulb doesn't light up, the last inch or so on each end stays dark.

JDigital · #4 03-22-2009, 03:25 AM

Quote:

Originally Posted by Myka

I find the Fiji Purples to actually be quite pinkish/reddish/purple. I wouldn't want to run exclusively Fiji Purples for supplemental lighting. I would go with a UVL Actinic as they have a much higher PAR than Giesemann True Actinic. Both bulbs are 420 nm. I'm not a fan of Giesemann bulbs due to poor PAR values as well the whole bulb doesn't light up, the last inch or so on each end stays dark.

I've got no problems hitting PAR values with my MH's, my T5's were purely for dawn/dusk and florescence w/ MHs. However I will be testing the PAR of the T5's.

As for the last inch, that's how every T5 bulb I have ever tried has been, not just Giesemann's.

foreverfortune · #5 03-22-2009, 07:08 AM

Quote:

Originally Posted by Myka

I find the Fiji Purples to actually be quite pinkish/reddish/purple. I wouldn't want to run exclusively Fiji Purples for supplemental lighting. I would go with a UVL Actinic as they have a much higher PAR than Giesemann True Actinic. Both bulbs are 420 nm. I'm not a fan of Giesemann bulbs due to poor PAR values as well the whole bulb doesn't light up, the last inch or so on each end stays dark.

yea thats the setup i may just go with and give it a shot. kz fiji purple and uri super actinic blue. read somewhere uri is uvl? or are they different manufacturer?

Myka · #6 03-22-2009, 08:19 PM

URI = UVL just depends who you talk to. One call it one way, others call it the other way.

Quote:

Originally Posted by JDigital

As for the last inch, that's how every T5 bulb I have ever tried has been, not just Giesemann's.

Giesemann's are the worst for it. The Grim Reefer on RC had some photos posted which clearly illiustrated how Giesemann bulbs were the worst for not lighting up the ends of the bulb. I have not been happier since changing away from Giesemann bulbs. I find their bulbs don't hold their spectrum very long either. That's just my experience though.