Any sound caused by water droping through pipes shuld be silent unless there is a lot of air coming up the pipe causing a sucking sound ..
You could try a gravity feed with a float valve that will keep the pipes full of water at all times if you dont like the over flow idear.. and use your pump to return the water to your tank .. eg level drops in the sump float valve opens fills sump the pump, pumps the water back up to the tank you could wire in a float sitch to turn the pump on when the water gets to the max level ..
The problem i can see with this type of setup is that the float valves rubbers go this means if you lose power and forget about it it can drain (regular maintance and remove salt build up and replace the rubers) your tank were as if you use an over flow its not an issue it cant over flow untill the pump pumps water into the main tank .. just a few thoughts for the day
You could try a gravity feed with a float valve that will keep the pipes full of water at all times if you dont like the over flow idear.. and use your pump to return the water to your tank .. eg level drops in the sump float valve opens fills sump the pump, pumps the water back up to the tank you could wire in a float sitch to turn the pump on when the water gets to the max level ..
The problem i can see with this type of setup is that the float valves rubbers go this means if you lose power and forget about it it can drain (regular maintance and remove salt build up and replace the rubers) your tank were as if you use an over flow its not an issue it cant over flow untill the pump pumps water into the main tank .. just a few thoughts for the day
