Are T5 lamps the same as T5HO?

AndyVE

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Hi all,

i am planning to replace my 2 lamps in my 33G aquarium for the first time.
it has 2x 24W (T5?) lamps 22" (55cm) 220-230V 50hz
Front and rear: 6500k and 8500k

Want to replace them by:
fluval T5HO 24W 22" 18000k (power spectrum)
fluval T5HO 24w 6700k (life spectrum)
For more space see links at bottom of my post

Are these the correct lamps (guess so due to the same size and wattage)?

Are those a good choice? Have live plants,
But was thinking about going to that 18000k so I have a blue light emitting to enhance the colour of my fish.

At current my highest K is at the back? Was thinking to put that 18000k in the front though
(seems to be more logical if you want to do this for the colour enhancement effect on your fish)
 

ryanr

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Thread moved to Lighting forum.

Hi,
T5 tubes and ballasts are available in three types, NO [Normal Output], HO [High Output], VHO [Very High Output]

Most common in the aquarium trade is T5 HO, and VHO is not very common.

For 2' tubes:
NO = 14W per tube
HO = 24W per tube
So you already have a HO fixture.

As to the rating, how deep is the tank? Whilst 18000k would add a nice effect, it's also possible that it would be too bright, and lead to algae issues. I had a 10000k tube on my 20G (18") and it was a major cause of algae in my tank.

Placement, front or rear, doesn't really matter IMO.
 

matsungit

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There are different kinds of T5. There's T5 (normal output), T5HO (high output), and VHO (very high output). I guess you have a T5HO fixture. A 22 inch T5 is only 14 watts. If you find that your bulbs are always dim and flickery then you may have a T5 fixture.

For plants, I would not recommend going any higher than 6700k. The plants might not be able to utilize the light spectrum at the higher kelvin ratings. You might get problems like diatoms or algae especially if it's a high output light fixture.
 
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AndyVE

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Thanks for the clarification!

Well my tank is 22" high (56cm)
78x37x56cm

Have some floating plants to make my fish feel more comfortable
(Cardinal tetras, pair of GBR, corydoras trilineatus, rasbora espei and RCS).
Moss, cabomba, something like Java fern (forgot the name...**** bleheri) and one more
And also a huge driftwood in it.

Another option could be




 
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