if you go all out and get 2 hydras, i wouldnt bother with T5 for anything,, go straight led.. if you want to supplement your current T5 setup with LEDS, dimmable shouldnt matter, most people would go with straight royal blue led strips and run them at 100% intensity. the ones you posted in the first post i dont think you will be happy with. they are 500$ for 2 48" strips.. they are only 30w each so probably are just 1w LEDS.. you could ebay similar brightness strips as those for less than 20$, another option is a full DIY strip accent lighting. for way less than 200$ you could get a 36 or 48 kit and with another 30-40$ in supplies you can have the satisfaction of saving money and doing it yourself.