Just like the title says, I'm contemplating doing a small AWC set up for my tank at some point and would love to see others set up's and how they went about doing it, also what's the best way to run it? I have seen a lot of stenner pumps be used as they change the exact same amount every time. But in doing this and pulling dirty water out at the same time as the clean water coming in is it not as efficient as removing the dirty water first and then replacing it with clean water after? I was debating going with a GHL doser for my set up, any thoughts?