@AlexG, do you have any links for the trap you built under the utility sink? I'm setting up a sink now in my fish room. I'm finding similar setups for ceramic hobbyists. And a brand called Gleco that sells a smaller container that mounts directly into the plumbing. Thanks again for keeping us all informed of your progress!
@acmonster I made the trap myself with pumping parts I already had on hand. Its easy to build. I put a diagram below to show what's going on inside the bucket. More or less the bucket should only fill to the level you set with the PVC inside the bucket once its sealed. I added the PVC extensions to ensure I can see there is a proper seal on the bucket and also so that when I go to clean it out it is not completely full of water. I just need to remember to not empty the water out of that bucket into the sink I just removed it from when I do a cleaning. This design would also allow the bucket to simply be swapped out for another one if its really dirty. Let me know if you have any questions.