I was only trying to follow the filter's directions. Replace the filter pad every 2-4 weeks. It had been two weeks and I had just gotten my axolotls, I figure they deserved a new one. This is to make you spend money. It takes about 8 weeks to build the bacteria you need for a healthy aquarium. You should actually replace the filter media MAYBE once every 12-18 months...and you do this in stages so you do not destroy your bacteria
It is my understanding that people use Rosies as tester fish all the time. I've never had a fish tank before, I didn't know if my water was suitable to house aquatic life. Another gimick - you start the process of "Fish-in cycling". Harmful to the fish as they are exposed to an unhealthy tank, can introduce disease, and is unpleasant to the fish.
Out of the 4 days I've had these guys, I've done about 3 water changes. I remove all my waste and uneaten blood worms pretty quickly after they're done eating. This is perfect.
See, this is why I'm so baffled. I've been doing everything right, and yet I have this crazy thing growing in my tank. This fish store and supplies is to make you spend more than you can. Also, don't buy any "miracle cures" the store tries to force on you - pH adjustment, ammonia lock etc are gimmicks
The tank is two weeks old, why would a film appear on the 3rd day that I get my axolotls? You also had fish in your tank which began the ammonia presence...it is completely harmless.