Choose 3/8″ for the AQUAvalve5 (gray/black) that works with Grommeted trays, the 12.4 gal Hard Tank, Tray2Grow System and 3/8″ fittings.
Choose 3/8″ – 1/4″ that works with the 12.4 gal Hard Tank with grommeted trays using old AQUAvalve4’s (black/red) with 1/4″ fittings.
Top Hat Grommets provide a water tight connection with the 12.4 gal hard tanks.
The Top Hat Grommet is positioned at the bottom of the reservoir. All AutoPot 12.4 gal hard tanks are now supplied drilled and with 3/8″ Top Hat Grommets.






Mr.GetBlown (verified owner) –
Grommet has a watertight seal on the replacement reservoir.
PapaGrowsweed (verified owner) –
Works as advertised, does not leak
Melvin Powell (verified owner) –
Strong seal!
Can use with many different set ups; self made or Autopot Auto watering systems, hydroponic, aquarium settings etc! Very durable and lasts a long time! Easy to remove and to install!
Q W Parks (verified owner) –
It’s one thing that they seal reliably it’s a even better that you get that consistency when having to clean the valves regularly. Put an on/off before each pot or tray and the autopot gets that much better.