Propnut
Senior Member
Just installed a new 40 gal. holding tank from Ronco under the floor of the forward companion way. The tank is 14” wide 12” deep and 60” long. There’s two 1” openings on the top of the tank. One at each end. One is routed about 6’ to the side of the boat.
Routing the second vent to the other side of the boat would require about 12’ of hose. So here’s the question.
Am I better off with a 12’ run with a couple of turns for the second vent, or would I be better off to pump fresh air into the tank( via some sort of small 12 volt air pump) like the Groco sweet tank system?
Next question is this. If natural ventilation will provide enough oxygen to keep the contents in the tank aerobic , why can’t I pump a small continuous flow of air into the tank at one end and vent the tank at the other end and achieve the same results? I know the Groco system uses a bubbler in the bottom of the tank that looks to be about 6” long. I can’t see how that’s going to help in a tank 60” long. Am I missing something or??? Thoughts and suggestions appreciated.
Don
Routing the second vent to the other side of the boat would require about 12’ of hose. So here’s the question.
Am I better off with a 12’ run with a couple of turns for the second vent, or would I be better off to pump fresh air into the tank( via some sort of small 12 volt air pump) like the Groco sweet tank system?
Next question is this. If natural ventilation will provide enough oxygen to keep the contents in the tank aerobic , why can’t I pump a small continuous flow of air into the tank at one end and vent the tank at the other end and achieve the same results? I know the Groco system uses a bubbler in the bottom of the tank that looks to be about 6” long. I can’t see how that’s going to help in a tank 60” long. Am I missing something or??? Thoughts and suggestions appreciated.
Don