The cold phase of the interstellar medium has a central role in galaxy growth and evolution. In normal galaxies following the “main sequence” of star-forming galaxies the SFR is believed to be regulated uniquely by the amount of gas available, and more specifically by the mass of dense molecular gas. Despite the enormous efforts to trace molecular gas in larger and larger samples of galaxies, nearly all of our empirical knowledge of scaling relations linking molecular gas and galaxy properties is still based on observations of massive metal-rich spirals. There is therefore a strong motivation to test molecular gas scaling relations over a much broader dynamic range of galaxy properties. With this goal in mind, we have undertaken the “APEX low-redshift legacy survey of molecular gas (ALLSMOG)”, a survey of CO(2-1) emission in a sample of ~100 local star forming galaxies, characterised by stellar masses, SFRs and metallicities significantly lower than have been probed by previous CO observations. I will present our latest results based on the full ALLSMOG dataset.