He has 0 nitrate. I have no idea how he can have 0 ammonia, 0 nitrite and 0 nitrate. If he’s dosing ammonia.
that’s why I suggested the shrimp, maybe something wrong with:
1- Test kit
Or
2- Ammonia not really ammonia.
Toss a shrimp in there if you don’t have ammonia or nitrate after that...