Ok i'm still not decided yet, but it seems that most of the 4bulb T5HO fixture will produde to much light for any planted tank.
I guess i need to go with 2 bulbs fixture and aim at a mid light aquarium.
I feel that with H5TO it's either mid light or wayyyyy to much light.
It's sad because the nicest items (design) were for the 4 bulbs fixture (ATI, Blau).
If i look at the LED i found the Finnex Ray II Ultra Slim LED DS - Dual 7000k , wich seems realy good and at a good price. They are BO until mid-march
If i can get a decent price for the Blau Lumina LED 'Plant special', i might go with that even if more expensive, pretty nice features on it.