I have the return pump and big external close loop pump running. Its a loud hum.
:/
Closed loop pump is so powerful i dont think i will need wave or powerhead pumps. It also was sucking down water from the returns and making lil wirlpools every now and again.
Overflow is probably the loudest next to the big pump
Well sad news. Im in need of a gate valve and re run my emergency drain pipe. Drain has a lil leak at the connection and needs to be tightened. Well i need to cut pipe for that and all wooohoooo.
D