The advantage of this system is the consistency of the water temperature and pH, but a disadvantage would be that an extra biological filter is needed for the breakdown of ammonia.
Inzuzo yalesi simiso ukuhambisana kwamazinga okushisa kwamanzi kanye ne-pH, kodwa ukungahle kwenzeke ukuthi ukuhlunga kwe-biological kuyadingeka ukuze kuphulwe i-ammonia.