Sera Bio Nitrivec - 100mL (03740) Premium class liquid filter medium Breaks down food remainders, ammonium and nitrite biologically Provides settling area for useful purification bacteria Creates a biologically active living environment The dangerous...

Sera Aquatan - 100mL (03040) Water conditioner for fish friendly water rich in mineral substances immediately removes chlorine and chloramines binds heavy metals with mineral substances Toxic substances such as chlorine and heavy metals can get into...