Lid for 630mm Diameter Variable Volume Fermenters itemID-9405 which is why it is

which is why it is only slightly less expensive than the double rack or the 60 gal size single rack

To avoid cross-contamination with other reagents & solutions

Lower the pressure to 6-8psi by turning the flat head screw on the front of the regulator counter clock wise

and a stainless oxygenation stone

Lid for 630mm Diameter Variable Volume Fermenters itemID-9405 which is why it isThis is a replacement lid for use with any Speidel tank with a diameter of 630mm. It will come with an airlock, White Gasket, Pump, and necessary tubing and clamps. This product can be ordered individually, and does not need to accompany a tank order.