<p class="p1"><span style="font-family:comic sans ms,cursive;">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;</span></p>  <p class="p2"><span style="font-family:comic sans ms,cursive;">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.</span></p>  <p class="p2">Buying these larger rolls saves about 15%.</p>