here’s a recent post with endorsement re a reasonable aquarium pump…Aquarium Air Pump
If you are doing NWTs, then you likely have your focus dialed in pretty good. Concentrate on cleaning your lens, adding air, and try some baltic birch 3mm. I made a few Christmas ornaments out of BB3mm and they were easy, fun, and great gifts. Same material is good for boxes too, also a lot of fun and sense of accomplishment.
Enjoy.