Hello Marisaaa.

Sorry to hear you lost your fish. I know it isn't easy. Your aquarium information states that you're cycling with new fish? Are these different from the ones you lost? If so, be sure to keep up with your water readings and water changes. If you haven't seeded the tank with established filter media from another tank or if you aren't using Tetra Safe Start (TSS) you'll need to do this daily to prevent
ammonia poisoning. Add some Prime or Amquel + to detox the ammonia for the 24 hours until it's time for the next
water change. Even though If you add Amquel + you may still get a reading for ammonia but it won't be toxic during those 24 hours.
Do you have a
test kit?
API (liquid) Master Test Kit is what is most recommended on this site.
Keep us posted and best wishes!
Ken
