Marineland Penguin 550 Power Head #PH0550 PK Price: $18.99 On Sale: Marineland Penguin 660 Power Head #PH0660 PK Price: $21.99 On Sale: Marineland Penguin 1140 Power Head #PH1140 PK Price: $26.99 On Sale: Marineland Penguin 660R Power Sponge Prefilter #PH0660R PK Price: $22.99 On Sale: Marineland Penguin Sponge Prefilter & Reverse Flow Kit #PHRFK PK Price: $8.99 On Sale: Marineland Penguin Replacement Sponge For #PH0660R PK Price: $3.49 On Sale: