Lighting for Refugium

[Horizon]

Hi,

Can anyone advise me on the lighting capacity for a refugium?

My refugium is rather small, jus a compartment in my sump, roughly abt 1.5x0.5ft. I haf a button grape (Crasspies) and grape (Caulerpa Racemosa) in it. And the lighting i am using is a 11W PL white light. Is it sufficient?

Thanks.

[xiggie]

keep track of your macroalgae if they are dying then the light is not enuff .... best get the 6500k bulbs

[lightningstrike]

IMHO, depends on how high up u put ur PL. like what xiggie said, 65ook will be good. but look after the grapes carefully. they r not that easy to keep.