Quote Originally Posted by luke997 View Post
WL - another interesting thing, when water is warm (benching or playing), flow goes up by 3-6l/h. I had no idea the difference will be that much
That's because the water expands when it gets warm and builds up pressure in the loop and compresses the air in the res. When this happens, it's more like running a T-line which Martin showed us a while ago always have higher flow rates the loops with res's. If you were to open your res and release that pressure while it's warm, your flow rate would drop again.