The 13.5 Full with plants
The fixture is 55watts, so I get about 4w/gallon @ 6700K. Co2 is coming from a pressurized system with about 1 bubble every 2 seconds. The plants in this tank are: green rotalas, Ludwigia inclinata var. CUBA, dwarf baby tears, hairgrass, anubias nana, japonica, rotala arcuata, stargrass, Bolbitis heudelotii & java moss tied to the wood.