So I've been smelling this weird gasoline/fuel odor in my living room and figured out yesterday that it was coming from my 12 gal.
This tank is newly cycled (2 months), all parameters are in check (zero ammonia /nitrites, 5 nitrates), has a carpet of dwarf baby tears and two leopard stones. No heater, and substrate is Ada Amazonia II. Co2 injected, canister filter Eheim 150.
It only contain my culls (shrimps).
I can't find any info online about that weird smell. It's definitely not a sulfur smell.