Hello,

I am restarting my reef aquarium and looking to install the Lightbar 2 illumination on it. The aquarium is 190 x 70 x 65 (water height). Based on the average recommendation on the GHL site of 0,6 watt/litre water seems to give quite a lot of bars to be added to the aquarium --> 3 x 80 & 3 x 90. Is this really needed?