I want to set up an automated watering system using drippers but I can't get my head round what I need to buy    I run 6 pots so 2 drippers per pot and I grow in Coco    This is what I think I need to buy    150l res 1200 lph water pump  13 mm tubing  Manifold with 12 drippers  Timer   I already have a big blue air pump    So do I just connect the tubing to the water pump in the res then connect to the manifold and place dripp