gauge

If anyone is into this, please contact me; I have 'inherited' a large layout and will try to sell/give away parts/whole.

Hello all, have for sale used oxygen tank with gauge and attachment. Tank need to be refilled. Best offer for the oxygen tank. Various sizes used hydro sponge filters $40 for the lot of filters only. Thanks, Gerard

Found an adjunct for sale for my RO unit that will allegedly double output and cut down on waste water. Says I need 65psi for it to work - anyone have a gauge I can borrow or a recommendation on how I might test my water pressure that doesn't involve spending money I could otherwise fritter...