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Anyone having 30-40 watt on 55g planted?

This is a discussion on Anyone having 30-40 watt on 55g planted? within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> Originally Posted by Byron I would suggest a single 48-inch tube to be preferable to two smaller tubes; reason being you have more even ...

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Anyone having 30-40 watt on 55g planted?
Old 02-08-2010, 03:07 PM   #11
 
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Originally Posted by Byron View Post
I would suggest a single 48-inch tube to be preferable to two smaller tubes; reason being you have more even light distribution down the tank from end to end. Also, the less expensive full spectrum tubes are available in 48 inches and the other sizes are not, at least here at Home Depot, etc. May be different in the US so then that wouldn't be a consideration.

Byron.
Yea right now mine's set with 2x48"....and I would REALLY wonder about using 1x48" @ 30watts total over the tank (rather then right now 60w total) both being T8's....

You think 30w "alone" would cut it with Swords, Vallis, Ludwigia, Sagetarria??
Was this tank not what it was in the beginning ( a plain nightmare) and was it established I'd have no concern testing and it and report back to ya'll in few weeks.....but this 55 being what it has been so far and finally NOW being in check - I'm scared it'll throw things off balance AGAIN and I'd hate myself if I triggered that.....

@B/ Everyone: The 1 tube going across rather then 2 individual ABSOLUTELY!!!!! I have 2 side by side on the 45g and I had how it makes the tank look split by the light with using 2 different K rated bulbs - I'd LOVE nothing more on that tank then having a single 4ft tube going across....but one DIY at a time
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Old 02-08-2010, 03:12 PM   #12
 
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Mine has 2 lights, one on the right side and one on the left. I have no idea how I would change it, unless I bought a new light fixture. This is just how it came. I believe they are 24" each. Lowe's DOES carry 24" bulbs in Daylight. My issue was that they only had 15w and 20w available, so I could do 2x15w or 2x20w in 24" bulbs.
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Old 02-08-2010, 03:49 PM   #13
 
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If you're using the same bulbs eg. 2x daylight...that's fine; but if you have them stocked with let's say a 5K and 65K bulb which if they're back to back is great - Just f they're side by side it looks like *sugar*

If I had the choice between what you're saying with the sizes you need etc I'd get me 2x20w daylights

BTW Anyone else ever noticed the daylights @ ~20" are just the same price then the 4ft'ers and they don't come in 2-packs....I mean granted they're still cheaper at Lowes then the petstore...I had just found it odd and never realized it until just recently when I busted my 18" one.
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Old 02-08-2010, 03:50 PM   #14
 
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Originally Posted by LisaC144 View Post
Mine has 2 lights, one on the right side and one on the left. I have no idea how I would change it, unless I bought a new light fixture. This is just how it came. I believe they are 24" each. Lowe's DOES carry 24" bulbs in Daylight. My issue was that they only had 15w and 20w available, so I could do 2x15w or 2x20w in 24" bulbs.
Two 20w would equal the 40w of a 48-inch [Natalie, the 48-inch is 40w usually, though the new manufacturers have 32w tubes that are equal intensity for less energy used]. That would be sufficient for most plants.

Just thought after I'd posted this; back in those days of my 55g with one tube, I never had algae; nor did I in the 25g tanks that had one 20w Grolux. Now that I have more light, admittedly over larger tanks but no deeper, I have had algae now and then. I think that again shows it is the light.

Byron.

Last edited by Byron; 02-08-2010 at 03:53 PM..
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Old 02-08-2010, 03:54 PM   #15
 
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Perfect, then 2x20w Daylight it is. I was going to grab that while at Lowe's, but I wanted to make sure first. Think I should check Home Depot for the 2x30w if I can get it (would that be better if I can get it) or just go with the 2x20w for a total of 40w?
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Old 02-08-2010, 03:56 PM   #16
 
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We use single 4 foot bulbs on a few 55's. Most plants will go fine. Narrowleaf chain I would say not so good though. A reflector will make a great addition to a single bulb setup. I agree with Byron on the double light hoods.

Dan
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Old 02-08-2010, 04:55 PM   #17
 
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Hmmm just checked the package; cause like the lil bulbs I have on the small tank they're 7 w (used wattage) but actually give off the light of 40w.....Didn't say nothing like that on the GE pack for the 4ft'ers just said 30w

You know what I'm gonna play around now (needing to do my w/c anyway) and I'm gonna jump in the clod water and see what it'll look with just one and go from there.)
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Old 02-08-2010, 05:05 PM   #18
 
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Natalie, I noticed the same thing on the GE bulb. It says the true wattage, not like the one you (and now I) use on the smaller tanks. I think maybe because the 7w is energy saver, but it still like a 40w bulb but uses 7w's of energy. Very confusing, which is why I had to take a pic of it for you
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Old 02-08-2010, 05:06 PM   #19
 
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Dan, what wattage are you using over the 55's for all the plants?
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Old 02-08-2010, 06:05 PM   #20
 
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Don't get too concerned over wattage, remember, that is not an accurate indication of light intensity. Watts is just the measure of energy used by the tube to emit whatever light it emits. The lumen is the measurement of light intensity (output), and the lux represents one lumen falling on one square metre. The measurement of lumens is the key to intensity, and while I rarely have seen this given on tube packages I have seen the lux (Hagen/Nutrafin's -Glo series of tubes has a lux chart). Natural bright mid-day sunlight is approximately 70,000-80,000 lux, and tropical plants require between 300 and 6,000 lux depending upon species; crypts are at the 300 end.

As an example, I have T8 Life-Glo 2 tubes on my tanks, and their lux rating is 320. So with two of these, there is about 640 lux. However, a majority of plants will do fine under this, as my tanks and Angel's tanks and other people's tanks prove. When I tried the T5 HO tubes, same brand, the lux was close to 500 per tube, which is why I say that one 48-inch T5 HO puts out the intensity of 1.5 T8 tubes, and over the tank the brightness was significant.

The watt per gallon idea works quite well with standard T8 tubes, for a guide. But as soon as you get these newer tubes that are more intense [like the Zoo Med series of T8] or the T5 NO and HO tubes, the watts basically becomes meaningless.

Byron.

Last edited by Byron; 02-08-2010 at 07:20 PM..
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