I am a newbie to all grain. I brewed a batch last week and I missed on just about all fronts. My gravity was way low my volume was was low. I had tons of issues with my new (to me) equipment. So here goes. I have 2 keggles My HLT with valve and pickup tube, MLT has a valve at the bottom and a port located near the top for infusions or wort circulation. The false bottom sits a couple inches off of the bottom so there is an approximately 2.5 gallon dead space. My big question is how do I account for this dead space if at all. I plan on recirculating my wort with a march pump and a piece of high temp tubing and circulating it throughout the mash. My question is basically how can I set up my equipment profile so that it gives me proper water amounts? How much water in my mash and then how much should I have in my HLT for fly sparge.