How to use 0-0-60 fertilizer

looking for dosage info, how much? straight into the plant stem or do i mix it with water? GMO in 3rd week of flower, ph 6.8, 76 temp, other nutes/ 10-50-10 miraclegrow 10-50-10, hum 55%. using easy-peasy muriate of potash 0-0-60. thanks in advance

0-0-60 is for late flowering, and strain depending, 3rd week for flowering you should have started this already.
Pictures would be helpful, along with strain information. Typically miracle NO products are not recommended for cannabis use. Especially their soil.