Fluval Bio-Screen for C2 Power Filters - 3 Pack - Provides Biological Surface Area Aquarium Sand It is derived from potassium

It is derived from potassium bicarbonate

Ideal For Reptiles & Invertebrates

The Alert Combo™ pack combines Ammonia Alert® (1 card) and pH Alert® (1 card)

in your very own home

Reduces fish loss caused by pH changes

Fluval Bio-Screen for C2 Power Filters - 3 Pack - Provides Biological Surface Area Aquarium Sand It is derived from potassiumFluval C2 Bio Screen Pad provides massive biological surface area for friendly bacteria to colonize, plus it blocks debris and evenly distributes water flow before it drips into the Power Filter's biological trickle chamber. Provides massive biological surface area for friendly bacteria to colonize Blocks debris and evenly distributes water flow before it drips into the Power Filter's biological trickle chamber For Fluval C2 Power Filter 3 pack