Such solutions are practiced in hospitals and sanatoria, where there are additional requirements for sanitation and these filters have a special design to enable and simplify the exchange of the gravel deck .
Ufumbuzi vile ni mazoezi katika hospitali na sanatoria, ambapo kuna mahitaji ya ziada kwa ajili ya usafi wa mazingira na hizi filters kuwa na mpango maalum wa kuwawezesha na kurahisisha ubadilishanaji wa Deck changarawe .