Quarantine: ammonia problems

[syncro]

I am getting increasing ammonia in 5g quarantine tank holding a clownfish and several snails. Current ammonia is about 0.035ppm.

- 5% water change (almost) daily
- 75% water change today
- large sponge filter seeded for 3 weeks in sump
- daily removal of uneaten food
- nearly daily addition of Aquavitro Alpha ammonia binder



Clownfish appears health, active and eating. Has good coloration and no sign of frayed fins.

Any suggestions?