hey guys i have a 20 gallon long nano reef tank. I have a 30" 2x18w 36 watt t5 double linear light on there right now. A friend told me that i need better light.
i was considering three possible options.
1 getting another 30" t5 and just run two 36 watt t5s.
30" Aqualight T-5 - Double Linear Strip - 58021
2 get a 24" 2x24 watt T5 High output retro kit, this is what my friend baught and strongly suggested. said he think i might be able to have hard coral
24" 2 x 24w T5 HO Retrofit Kit - 24224
3 i also found this while searching a 175w metal halide kit thats cheaper then the t5 retro kit and it comes with a bulb.
JBJ K-1 175W Metal Halide Retrofit Kit with FREE XM Lamp!! - K-1-175P
let me know what you think, and offer me what ever suggestions you can thanks !