2D T5 Lights, anyone using them?

[Limsteel]

I installed some new lights for my toilet and found them to be quite bright (Very bluish tint, 10,000K maybe). Marine guys can check this out.. Later I found these tube to be 38W... Went to a shop and found the ballast was quite cheap (<$10)

The Ballast itself (Electronic Ballast) has a built in socket where the 2D tube fit in nicely. I bought a set of 21W 2D Tube and Ballast for less than $20...

Those interested in Powering up your Nano tank (1ft Cube) can seriously consider this type of lighting... with a 38W tube, you can achieve 6Watts per Gallon... WPG more for Planted, does it work for Marine?

Those bigger tank can install more, typical 4 x 2 x 2 tank with 8 sets of 38W can achieve 3WPG...

21W tube will be 142mm x 142mm,
28W, 38W and 55W, are all 204mm x 204mm

Use proper lighting for your tank unless yours is a FOWLR ...

[Limsteel]

These tube are at least 10,000K... As long as the tube is of the right range, it is deemed proper.

What is proper lighting? Most aquarist be it Marine/planted uses any light (MH, T5, PL, FL) that has the right Kelvin temperature range. Light made for aquarium is ridiculously expensive... imagine $28/$25 for a FL(T8) 18W Arcadia Marine white/Blue Actinic light...

[Guppies Onli]

Sorri Lim, but did they specify 10000K on the tube or the box? It's good to know the K of the tubes used.