My DIY internal PVC overflow

Where I'm at now, watch the entire video as it get quieter:


Starts with just overflow, then I add insert and finally cap. As a note, it does suck the cap down (siphon) and becomes very quiet! The burping is from underneath the bucket as the other side of the bulkhead is just submerged in water and it letting our air.  Other noise is the return which is just the injection nozzle from my ETSS.


And here's my build thread