????????? ?? ??????: ????????? ????? ?? ?????? ????? ?? ??? ???? ????????? ?? ????? ?? ???? ???, ????? ????????? ?? ?????? ?????? ?? ??? ???? ????? ?? ???? ???Before incorporating h2o towards the tank, it ought to be sufficiently cleaned. Use a solution of potassium permanganate, i.e., KMNO4 (antifungal agent), to wash the tank and leave it for twe