I'm looking to light a roughly 18x18x16 fuge and am looking to get some input on lighting options. I'm looking at some sort of t5 fixture, Kessil H380 or a Radion XR15 FW. I read that t5 give the best spectrum for growth but I never really see any fixtures and bulbs under 24". I'm really leaning towards the XR15 based off the form factor and coverage. The Kessil has proven to be a cheato growing monster but I'm not sure how well it would work for a variety of macros, plus i've found it difficult to find the balance between mounting low enough to prevent getting too much spill over but high enough not to completely burn the macros on another tank.