kingrowland1217 July 31, 2018 Share July 31, 2018 Need help quieting my overflow. I know this is 1000th post about this lol. I had my tank drilled for this specific overflow so I cant really change it now. So please don't reply with "you need to change to X style". I have a jebao 6000 return which is rated at 1500gph, I've tried it at 10% all the way up to 100%, makes same noise. They send these grommets to make the drain hole smaller but they haven't helped much. Its hooked to 1-1/2" hard PVC down to the sump. I don't really want to add a gate valve just because I'm worried it'll fail. Any other suggestions to try? I need to figure out a way to keep air out or maybe put a small tube down it to allow air in? Would soft drain hose make it any quieter? IDK. Thanks for any help Link to comment Share on other sites More sharing options...
Origami July 31, 2018 Share July 31, 2018 I suspect that you're getting gurgling as air is sucked into the drain. You might try feeding some airline down into the drain to vent the air into the drain in a more controlled fashion (analogous to venting a Stockman or Durso standpipe). Unfortunately that's not a very good overflow design there. Another option would be to vent the drain pipe on the outside of the tank in similar fashion by drilling a hole in the top of the elbow and feeding some airline tubing a couple of inches in while leaving an inch or two out at the top. Sent from my tablet using Tapatalk Link to comment Share on other sites More sharing options...
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