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Would a dual T5NO be pushing it for low tech no C02?

This is a discussion on Would a dual T5NO be pushing it for low tech no C02? within the Beginner Planted Aquarium forums, part of the Beginner Freshwater Aquarium category; --> Yes, the aqueon is regular T5, not HO, look at the wattage, for 30" bulb non-HO is 18 watts, HO is 31 watts. My ...

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Would a dual T5NO be pushing it for low tech no C02?
Old 03-05-2012, 12:07 PM   #21
 
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Yes, the aqueon is regular T5, not HO, look at the wattage, for 30" bulb non-HO is 18 watts, HO is 31 watts.


My numbers for light output were rough estimates, the 1.25x for the Coralife and 2.5 for the Aqueon over the 24" T8 is based primarily on the total bulb length. For this discussion, assume equal light output per unit length for non-HO T5 and T8, so 30" for the coralife and 24" for the standard T8, 30/24=1.25; and for the dual Aqueon, 60/24=2.5. For HO T5, the output is roughly 1.5x that of non-HO T5/T8 per unit length, so a single 24" T5HO would be the next step up from the Coralife with the 30" bulb at 1.5x that of the 24" T8. I think anything above these two would go beyond low tech. I would have mentioned a single 24" bulb T5 HO as another option, but there aren't any on the market as far as I know, scott36854 mentioned a Zoomed dual 24" T5HO in another thread with independent bulb control so that only one bulb could be used at a time, but most wouldn't want to buy a fixture and only use half of it.
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Old 03-05-2012, 12:15 PM   #22
 
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Originally Posted by Byron View Post
Earlier I said that Quantum's suggestion was good, and I still do. Trouble is, NO tubes are rare. For example, no one in Vancouver where I live carries them. And I prefer getting this sort of equipment via local stores in case I have to take them back. And I cannot recall ever seeing NO advertised in TFH or PFK.
Completely agree with both points, the ONLY T5NO bulbs I could find are the Aqueon ones weighing in at about $20/each. I also would rather pay a few extra dollars for the ease of buying from a local brick and morter. Now if were talking a couple hundred difference like my RODI I just got, I'm online all the way

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Originally Posted by Byron View Post
HO is much more readily available, as more and more manufacturers are getting into this. ZooMed now carries a complete line of their tubes in T5 HO, and Hagen brought out their T5 "-Glo" series quite some time back. Neither of these make NO. NO is very close to T8, and I suspect the thinking is that if you want that level of light, stay with the less expensive T8. T5 was initially developed for reef tanks that need high light for corals, without having so many tubes over the tank. It's application to freshwater has been a convenience, but perhaps not ideal. And with the increasing development now of LED and other lighting o-options, I doubt we will see much advancement in the T5. They have developed VHO (very high output) again for reef systems.
If Hagen has a lifeglow T5 then I'm sold already, just need to find a nice looking single bulb fixture. I keep going back to how ingrained I got "don't do anything HO (T5) without CO2" in my head. I think a lot is from following all of your posts and seeing your overwhelming success with 29g and a single T8 . I think though for my personal taste/setup I would be able to get away with just a tad more light while staying lowtech and being balanced with minimal algea increase (if some oh well, if a lot, I can change again) Also this would allow a slightly larger range of plant selection. Worst case I can always return or sell the T5 and go back to my T8

As always, Byron, thank you (and everyone else who posted) for the great advise. I'm thinking I'm going to research some single T5HO fixtures.
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Old 03-05-2012, 12:22 PM   #23
 
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seeing your overwhelming success with 29g and a single T8
This should be considered the baseline, we know that no more than this amount of light is needed for success, no need to deviate too far from it, unless you want to go the high-tech route
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Old 03-05-2012, 12:31 PM   #24
 
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Originally Posted by Quantum View Post
This should be considered the baseline, we know that no more than this amount of light is needed for success, no need to deviate too far from it, unless you want to go the high-tech route
Definitely don't want to go the high-tech route at this time, maybe an experimental tank down the road. My reef gives me plenty of techy stuff at the momement (not to mention expense, just ordered six new ATI T5 HO bulbs for the Teklight fixture, pretty penny there), still planning on adding a calcium reactor and a sump/refugium. Dosing CO2 in my planted tanks is neither on the budget nor on my to do list. As I said, I love the simplicity of the natural low-tech. I guess I've been spending so much time messing with my reef that I felt the planted tank was lonely and needed something new lol. In all honesty the new glass hood is already a much nicer improvement and probably does let a bit more light into the tank so that might by just what I was looking for and may hold me at bay from making any major lighting changes for a while. I'm just the type though that once something gets stabilized I have to push the envelope. I've always learned best by my own trial and error . Turn the knob, that's it just a little further, aww I can get more out of that, just a bit more, there ya go, ok, one more turn then I'm done... Whoops too far, back it off just a tad, there perfect.
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Old 03-05-2012, 12:34 PM   #25
 
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I'll be going down this road (again) soon... Petsmart has tanks on sale, so it's time for me to go pick up the 125g I've had my eyes on forever. It comes with two 36" single tube T8 fixtures, not sure what the actual bulb lengths are (like my 20g is 24" wide but the bulb is only 18"). But this tank is 4.5" deeper than a 29g. No idea where that puts me.
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Old 03-05-2012, 12:39 PM   #26
 
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Originally Posted by Geomancer View Post
I'll be going down this road (again) soon... Petsmart has tanks on sale, so it's time for me to go pick up the 125g I've had my eyes on forever. It comes with two 36" single tube T8 fixtures, not sure what the actual bulb lengths are (like my 20g is 24" wide but the bulb is only 18"). But this tank is 4.5" deeper than a 29g. No idea where that puts me.
That's a sweet tank! I love the 18" width. After getting my 40g breeder I don't think I'll ever get a "thin" tank again.
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Old 03-05-2012, 01:01 PM   #27
 
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I knew about the Coralife fixture because I was going to buy it and for the same reason I brought it to your attention, e.g. it offers a bit more light than the 24" T8 without going too far, I also like the look of it.



I've noticed something else that illustrates my point about the light output of the 30" T5 vs the 24" T8. As was mentioned, they are similar wattage (18 watts for the T5 and 17 watts for the T8). So you can see that with the extra watt plus the fact that T5 produces more light per watt, that the 30" T5 will produce not an insignificant amount of light more than your current set-up, but not so much that it would push it to the next level.

Geo, the standard 36" strip lights have 36" (25 watts) T8s.
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Old 03-05-2012, 02:51 PM   #28
 
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Originally Posted by Geomancer View Post
I'll be going down this road (again) soon... Petsmart has tanks on sale, so it's time for me to go pick up the 125g I've had my eyes on forever. It comes with two 36" single tube T8 fixtures, not sure what the actual bulb lengths are (like my 20g is 24" wide but the bulb is only 18"). But this tank is 4.5" deeper than a 29g. No idea where that puts me.
I hope you can buy the tank without the hood/light, and save some money, or with another fixture. That will certainly be insufficient light, unless you are planning a tank for say angelfish or discus with no submersed plants but only floating and an authentic aquascape of sand and chunks of wood and branches. That would be lovely, but if submersed plants are intended, this fixture won't do it.

I have a 5-foot 115g which is probably near identical to the 125 in measurements and I have two 48-inch T8 tubes in parallel (so centre). It is perfect. I tried two T5 HO 48-inch tubes for a full week before I took it back--way too much light. I was able to exchange with no loss (an advantage of buying from a local store), and the T8 is less expensive for fixture and tubes.

Byron.
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Old 03-05-2012, 03:03 PM   #29
 
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Originally Posted by Quantum View Post
I knew about the Coralife fixture because I was going to buy it and for the same reason I brought it to your attention, e.g. it offers a bit more light than the 24" T8 without going too far, I also like the look of it.
I really liked too it for all of those reasons, the description on the site is confusing though. I believe the Aqueon branded colormax bulb is 10,000k. The description on the site states it comes with a colormax bulb but the specs list a 6,700K, full-spectrum daylight. I wish I could find a spectrum on these bulbs, Hence another reason unless I know exactly what it is and it's exactly what I want I don't like ordering online, too many open questions. I really like the fixture though. I wish someone on here has had the single bulb one to comment.
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Old 03-05-2012, 04:24 PM   #30
 
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the description on the site is confusing though. I believe the Aqueon branded colormax bulb is 10,000k. The description on the site states it comes with a colormax bulb but the specs list a 6,700K, full-spectrum daylight. I wish I could find a spectrum on these bulbs
I noticed this too, the spectrum is shown here:

Replacement Lamps | Coralife Marine & Freshwater Aquarium Supplies

It looks very similar to the 6700K daylight, which I have used and liked, just with more red and maybe a bit less green
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