<p class="p1">This is the tubing used to connect Blumat components to your water source. It's an 8 mm European style. You can also use US-style 5/16" drip tube but it's hard to find, not very flexible, and the fittings are harder to put in.&nbsp;</p>  <p class="p1">This white color version is good for keeping the temperatures down - better for nutrients and preventing a kind of "vapor lock" that can occur in some hydroponic systems.</p>