Lighting For My 18 Gallon

[SamLovesCorys]

I've read a lot that it's good to replace light tubes yearly, and mine have been used for at least 5 years without replacement (Inherited tank).

I'm pretty sure I need 15w T8s, and they need to be 18" long. At the minute it has Arcadia Marine White FMW15s in it!

Which (Reasonably priced) lights would you recommend to show the fish well and encourage vigorous plant growth?

Thanks, Sam