DIY Wet/Dry Trickle Sump Filter with PVC Overflow!

Here’s the filter I just made for our fish tank. A lot of our fish were dying, and the water was severely green so we had to get a new filter. I made it myself and it cost 1/3 of the price! Thank you Internet! Here’s how the Overflow works Special thanks to Urajoey and others who helped me figure out how this works :)