Hello all so I know this is kinda a dead horse but I can’t find an answer specifically addressing this issue. I have an 8 inch reef octopus classic 200 int that is brand new it makes a loud gurgling sound and if I place my hand over the pump intake it goes away release it it comes right back remove the Venturi valve and it goes away put it back on the pump it comes right back. Any way to shut this thing up for good?