Oki doki. Sorry, its almost 3am here and I'm tired, your original posts made it sound like they'd produced 10ppm nitrates in a day.. My bad..the nitrat isnt from 1 day beacause i took the water from the eploded tank. im doing 50% every 3 days. beacause im checking the water regualy i think this is ok. i use Prime, thers no substarte and i feed twice a day in an amount theyr finishing in 15 seconds
I assume you vacuum the poop up off the bottom when you do you water changes?
Best suggestion I've got is to keep the water clean and keep trying for better pics/vids until you can get them a bigger home..
Good luck! I have a soft spot for goldies so I wish you the best of luck with them.
Post Script: goldfish like to dig around and look for food in the substrate, maybe throw a small handful of smooth pebbles in for them to dig in. It doesn't have to be enough to cover the entire bottom, just enough so they can pick them up and spit them out. It will help make them feel more at home.