uscgbeachbum
New member
After looking at some dosers I thought of an idea. I know this has been done before, so I know it works. I'm looking more for things to consider, modifications, etc.
Going to use an "extra" airpump I have. Its a cheapo one that probably cost $7. T the outlet so you have 2 lines now. As long as the airline tubing after the T are equal lengths the flow rate (after friction) will be equal. Somehow attach them to a Gatorade bottle cap. Fill up both bottles to the same level. Run rigid airline tubing from the bottom of both bottles through the Gatorade cap (epoxied in place), and run airline tubing from the rigid tubing into the tank. I can then time the flowrate and hook the air pump to a timer to get the needed amount of volume. like to keep this under $10.
Going to use an "extra" airpump I have. Its a cheapo one that probably cost $7. T the outlet so you have 2 lines now. As long as the airline tubing after the T are equal lengths the flow rate (after friction) will be equal. Somehow attach them to a Gatorade bottle cap. Fill up both bottles to the same level. Run rigid airline tubing from the bottom of both bottles through the Gatorade cap (epoxied in place), and run airline tubing from the rigid tubing into the tank. I can then time the flowrate and hook the air pump to a timer to get the needed amount of volume. like to keep this under $10.
