Hi all! I've had a search, but my apologies if this issue has been tackled elsewhere - I couldn't find it! I've been all grain brewing for a few years now, but recently did my first brew on an all in one system. The issue I found is at the mash stage. The grain basket sits above the bottom of the unit and between the bottom of the grain basket and the collection pipe there is around 3l "dead space" now, it isn't dead space a such as the wort will be collected almost to the bottom. But, I am used to mashing in a separate mash tun with a false bottom. My challenge is, if I add an extra 3l of water into my mash to accommodate for the "dead space", surely I am then not getting the desired mash thickness - how do I account for this? as on my last brew it called for 15l of mash water, but this didn't even cover the grain. So I had to put just over 18l in, which not only of course messed my desired mash thickness up, but also sent my PH way out. Hope that all makes sense, again brewing on an all in one system is new to me! hoping some more experienced members can offer some words of wisdom here. Thanks in advance.