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Old 06-01-2004, 03:44 PM   #1
kingkano
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Lighting for a new tank...


Okay okay you guys are probably sick of hearing about this these days - but can you help advise me on lighting??

My budget allows me a choice of 2 solutions, based on space available over the tank and the light I want, and being in the UK what I have available!!

THe tank is a 24x12x18high (about 23g). It will be heavily planted as a sth east asia biotope - mostly lol - as per dwarfpuffer site. I have already bought eco-complete (2 bags) to use in it.

The lights I can get are - 3x24w T5 6500k cri 85 (total 72w). This is a good solution because I dont gotta fiddle, and should give good light as basically 3wpg right?

The other solution is to fit some compact fluorescent type bulbs in, 6500 cri 82-88, 20w each. I could get about 4 or 5 for the same money (so total 80w-100w). Are compact fluorescents as good at directing their light, considering not all of the tube surface is external?

I am not sure which is a better solution, both seem good on paper, both provide about the right watts. T5 might be easier (and they are just plain kewle right? lol).

What do you experts reckon?

Thanks in advance

Ken
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Old 06-01-2004, 03:50 PM   #2
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if you are refering to 20 watt Screw in compact flouresecents (the kind with the ballast as part of the bulb) then go with the T5's all the way. In fact, I would probably go with the T5's anyway.... Linear tubes are much easier to deal with.. no retaining clips, symeticrical bulbs.. its just simpler.
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Old 06-01-2004, 03:52 PM   #3
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Quote:
Originally Posted by GDominy
if you are refering to 20 watt Screw in compact flouresecents (the kind with the ballast as part of the bulb) then go with the T5's all the way.
Yep those are the ones (well we can get screw in or bayonet here).

Thanks for you tip Didnt think of retaining clips actually.....
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Old 06-01-2004, 04:34 PM   #4
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T5 all the way!!! Way kewle!
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Old 06-01-2004, 04:36 PM   #5
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Quote:
Originally Posted by kingkano
Yep those are the ones (well we can get screw in or bayonet here).

Thanks for you tip Didnt think of retaining clips actually.....
Forgive my ignorance, but I am not familiar with the term "Bayonet Fitting" I have heard it used a few times from you UK folk, but I have not ever actually heard a description of the fitting itself...
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Old 06-01-2004, 05:13 PM   #6
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A bayonet fitting is basically smooth with 2 pins like -U- you push into a socket then quarter-half turn to lock the pins in. Just quicker than lots of turns to screw in but not as secure really.

Is it correct that a 24w T5 is equivalent to about a 30w T8 bulb???
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Old 06-01-2004, 05:40 PM   #7
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Its difficult to actually say that X Watts from a T5 are equal to Y Watts from a T8.. the bulbs are different.. and Every bulb has different specifications.

However.. "Generally" speaking.. a T5 has more light output per watt then a T8
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Old 06-01-2004, 06:02 PM   #8
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hmmm ok very interesting. I dont think I can fit that many t8s anyways, so defo t5s lol. thats gotta be 4 or 5 t8s @ 18w each - ouch.
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Old 06-01-2004, 06:14 PM   #9
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Dont forget about High Output T5's.... More watts per bulb then standard
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Old 06-01-2004, 06:57 PM   #10
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I think these are high output. ermmmm arent regular output 549mm 14watt and high output 28watt??
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Old 06-01-2004, 07:07 PM   #11
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oh wait.. I think you're right.... Slap three of those over your 20 gallon and that will be nice and bright...
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Old 06-01-2004, 07:21 PM   #12
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Quote:
Originally Posted by GDominy
oh wait.. I think you're right.... Slap three of those over your 20 gallon and that will be nice and bright...
Hoped as much

It gives me about 3wpg by the old rule, shouldnt be much that will suffer in that eh.

Would DIY co2 do in this tank?? (sorry its not a lighting question really is it lol)
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Old 06-01-2004, 07:48 PM   #13
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At 3wpg I would definately go for some DIY CO2... should be a nice setup!
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Old 06-02-2004, 07:37 AM   #14
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next question. Should I stick to 3 x 6500k bulbs or 2 x6500k and 1 xblue 20k bulb??

On that note too - is 3wpg too much?!?! I am looking round at some of the best tanks now, and they all use 1 or 2 wpg. But I thought that was never enough>??
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Old 06-02-2004, 02:16 PM   #15
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You're lucky, T5's aren't that popular in the States...we're all into big Power compact tubes.
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