1) oily layer must be addressed - it's protein and scum, better circulation of water should help
2) investigate the lightbulb that came w/ the biocube - if it's for corals (quite blue, 10,000-14,000K rating), it won't do much for plants (who prefer 6500-10,000K, generally).
2) investigate the lightbulb that came w/ the biocube - if it's for corals (quite blue, 10,000-14,000K rating), it won't do much for plants (who prefer 6500-10,000K, generally).