I'm running flood and mist on my PM-932 conversion. I mostly use the flood. I has its drawbacks and there can be a bit of a learning curve on getting a DIY system working optimally. I have found for flood to be fully effective in clearing chips you need 3 to 4 nozzles and good pressure. I started with a 4 gallon system and a pond pump. I have evolved to a 12 gallon system with a 1/2 hp sump pump. The flow is regulated with a bi-pass line & valve. I went through three brands of coolant before settling on Koorite 2290.