Hi, Im just wondering why some people put plants in their sump instead of in the main tank. Until i see this "Marine Plants" forum, i start to see alot of you actually have plants in your tank.. The reason i ask cuz I used to put them in my sump with NO and they dont grow at all so i took them up to the main tank and BOOM they went... they grow really fast under then MH .. So is it good to keep them in the main tank since they do so well? I have needle macroalgae ( i think thats what you call it) by the way.