I got two intex quick fill electric pumps each attached to a one way valve connected to two divergent pvc crystal hoses that merges into one and goes under water. The device is working fine, but I can only run it for 10 mins since that's the max time the electric pump can be used with no breaks, my question is how can I alternate between the electric pumps so after 10 mins one automatically stops and the other one starts so I can finally meditate with my pocket full of stones at the bottom of my pool in peace??? via /r/DIY http://ift.tt/2wiPOKd
