What is that bug??

This is afungus gnat she has 3 stages.... fly... lays eggs under the surface of the soil egg..... larvae.... eating alot of the wonderful roots your plant has andmakein troubles succesfull fight agains the gnats is like that... you must fight themin everyy stage fly... get yellowstickers, put aquariumsand on the surface oof the soil... let fan blow.. or spray the surface and the ( not flowering plant with aneemoil solution feeding from bottom if you have sand on the surface sand or diamantus earth is good against the flys ( they cannot lay eggs) and larvae, because there are microcrystal that hurt tthe larvaes get predators ....they eat all eggs and larvaes... you have to fight them consequently, because only one fly put tons of eggs under the surface The nematodes are veery effective, but you have to put them in eveery pot in your household, that contains soil egg and larva