please help over flo problems

plumber

Member
Happy Easter! Over flow problems

[hr]
Hi , Setting up 150 today dual overflows. I have a wet/dry made for tank I decided I would like more flow so I added another pump to drive system.My thinking one for each overflow pump1 1500gph, pump2 unknown, problem is return to wet dry sounds like waves crashing against rocks. I looked at overflows and noticed water rising then falling in sync with wave noise. any help or is this normal? The system is made by all glass aquarium and is a matched set.
Thanks John
 
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