Best Biological Model

Aquascape 80007 Pond Waterfall Filter Replacement Media Net

Aquascape BioBalls Biological Filter Media supports effective biological filtration by providing textured surface area for beneficial bacteria to grow and colonize.
Each ball offers 19 square inches of surface area, and the center channel allows the balls to be strung together, making cleaning quick and simple.
BioBalls Biological Filter Media will not break down like traditional biological media options, providing years of trouble-free use without replacement..
The paddle wheel design breaks water flow, helping to de-gas the water and maximize dissolved oxygen levels..
Compact size allows for placement into smaller spaces and each 100 count includes a media net with drawstring..

Premium biological and mechanical filtration media designed specifically for the Fluval 406, 407 canister filters.
Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture.
Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow.
Bio-Foam+: mechanical and biological filtration media with large porous surface that supports expansive beneficial biological activity.
6-month supply for use in freshwater and saltwater aquariums.

Premium biological and mechanical filtration media designed specifically for the Fluval 306, 307 canister filters.
Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture.
Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow.
Bio-Foam+: mechanical and biological filtration media with large porous surface that supports expansive beneficial biological activity.
6-month supply for use in freshwater and saltwater aquariums.

Premium biological and mechanical filtration media designed specifically for the Fluval 206, 207 canister filters.
Bio-Foam Max: 2-in-1 biological and mechanical filtration media with rippled surface pattern offers 30% more area for increased debris and waste capture.
Bio-Foam: mechanical filtration media precision cut (no gaps) to prevent debris bypass and complex foam structure maintains consistent water flow.
Bio-Foam+: mechanical and biological filtration media with large porous surface that supports expansive beneficial biological activity.
6-month supply for use in freshwater and saltwater aquariums.

Replacement filter cartridges, designed for use with all Marina Slim Filters, provide chemical, and biological chemical filtration.
Activated carbon effectively removes pollutants and odors to provide a healthy environment for your fish.
Ceramitek, a highly porous ceramic biological filter medium, optimizes biological filtration.
recommended 2 week replacement intervals.
Includes 3 replacement filter cartridges.

Package & Service: We are committed to the highest standards of quality. Your satisfaction is our top priority, any quality issues please feel free to contact us. Your shopping experience should be perfect every time..
Contrast the structure of animal and plant cells" teaching demonstration model. Is a model of typical cells that concentrates the characteristics of the general animal plant cells and the main organelles in the model. Can help students to carry out comprehensive teaching practice, effectively combining theory with practice.
The structure of plant cells is divided into cell wall, cell membrane, chloroplast, nucleus, vacuole, cytoplasm.The structure of animal cells is divided into cell membrane, nucleus, and cytoplasm. Designed to provide you with a comprehensive system of biological cell models.
Material: Made of environmentally friendly PVC, computer color matching, beautifully hand-painted. Almost true display of animal plant cell structure. Size: 28*18*13cm.
Teaching tools: Different colors are used to distinguish different positions, and the colors are bright and easy to attract students' attention, so you can to teaching demonstration, which promotes students' understanding and increases classroom fu.

5-stage clip-on power filter designed for freshwater and saltwater aquariums between 40 and 70 gallons.
Two mechanical stages trap large and fine debris, foams easily slide out for quick cleaning.
Chemical stage with activated carbon effectively removes toxins.
Biological stage features Bio-Screen pad, blocks debris and provides massive surface area for beneficial biological activity.
Biological Trickle Chamber super charged for fast and efficient nitrification when loaded with Fluval C-Nodes.

5-stage clip-on power filter designed for freshwater and saltwater aquariums between 10 and 30 gallons.
Two mechanical stages trap large and fine debris, foams easily slide out for quick cleaning.
Chemical stage with activated carbon effectively removes toxins.
Biological stage features Bio-Screen pad, blocks debris and provides massive surface area for beneficial biological activity.
Biological Trickle Chamber super charged for fast and efficient nitrification when loaded with Fluval C-Nodes.

5-stage clip-on power filter designed for freshwater and saltwater aquariums between 20 and 50 gallons.
Two mechanical stages trap large and fine debris, foams easily slide out for quick cleaning.
Chemical stage with activated carbon effectively removes toxins.
Biological stage features Bio-Screen pad, blocks debris and provides massive surface area for beneficial biological activity.
Biological Trickle Chamber super charged for fast and efficient nitrification when loaded with Fluval C-Nodes.