On my 300 (96x30x24) I have 4 Radion Gen 5 XR30 with 3 Kessil A360x . I have a Kessil in between each Radion Gen 5. Lay out is far left radion, kessil, radion, kessil, radion, kessil then last radion. LPS on bottm of tank with start of some sps on top of tank. Lights are 16 inches off top of tank and run down the center. Hope this helps.
