dimitri320
Aquarium Advice Apprentice
- Joined
- Jun 8, 2016
- Messages
- 43
I've got a problem. I've had a perfect 450l aquarium for about 5 months with a great nitrogen cycle, all was perfect! Now last few days, all NH4, NO2, NO3 are way too high! I've cleaned all my filter (got 3) and changing water for 3rd day in the row and nothing helps, within 24 hour all are back to high levels. I've got a lot of fish, yes, but I don't think too many. What's wrong and what should I do???
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