Cooling flow power versus mini-halo radio luminosity at 1.4 GHz for the sample of mini halos from Giacintucci et al. (2019). The red data point indicates the Phoenix cluster. The dashed grey line indicates the best power-law fit through the data and is given by log P_MH[10⁴⁰ erg s⁻¹] = (1.37 ± 0.17)log P_cf[10⁴⁰ erg s⁻¹]−(6.07 ± 0.79). The integrated mini-halo luminosities are from Giacintucci et al. (2019) and this work. Values of the cooling rates and ICM temperatures are from Arnaud et al. (1987), Churazov et al. (2003), Gitti & Schindler (2004), Böhringer et al. (2005), Covone et al. (2006), Leccardi & Molendi (2008), Bravi et al. (2015), McDonald et al. (2015, 2018), Main et al. (2016), and Werner et al. (2016).