Auto pot 13 mm – 4mm top hat grommet Hydroponic System
If you have purchased or are using your own large tank and do not have access to insert a 13mm water barrel tap you can use a 13mm Top Hat Grommet.
A 13mm hole is drilled at the bottom of the tank and the 13mm Top Hat Grommet is inserted into the hole. 4mm pipe (hosepipe) is then pushed into the grommet.
This will form a water tight connection.
Please note that this product is sold individually