Top Biological Contact

Fluval C4 Power Filter, Fish Tank Filter for Aquariums up to 70 Gal.

• 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.

Fluval C2 Power Filter, Fish Tank Filter for Aquariums up to 30 Gal.

• 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.

Fluval C3 Power Filter Fish Tank Filter for Aquariums up to 50 Gal.

• 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.

Fluval Biomax Bio Rings, Biological Filter Media for Aquariums, 17.63 oz., A1456

• Biological filter media that provides superior filtration.
• Complex porous design ensures optimal contact time as water passes through.
• Helps reduce and control ammonia and nitrate.
• Replenish only half the filter media at one time to allow proper seeding.

Insect Pinning Block

• From our beginnings in 1927, Carolina Biological Supply Company has grown to become a leading supplier of science teaching materials for all levels of education. Today, from our headquarters in Burlington, North Carolina, we serve customers worldwide, including teachers, professors, homeschool educators, hobbyists, and professionals in health and science-related fields..
• When you shop with Carolina, you're not alone! All of our products are backed by unparalleled technical support, available from 8am to 8pm, ET, Monday-Friday. Contact information (Live Chat, email, and phone) is provided after placing your order at Amazon..

AquaClear, Fish Tank Filter, 5 to 20 Gallons, 110v, A595

• Aquarium filtration system that offers superior contact time with filter media and energy efficient pump lowers operating costs.
• Quick and easy installation, we recommend that you clean aquarium filter every two weeks for maximum operation and efficiency.
• Provides optimal mechanical, chemical, and biological filtrations.
• Comes equipped with AquaClear Foam, Activated Carbon Filter and BioMax and Cycle Guard for superior water quality.
• Filtration volume is up to 7 times larger than comparable fish tank filters.

USCAMEL Microscope for Adults,Kids and Students, 100X-2000X Magnification Monocular Compound Microscopes with Microscope Slides Kits, Phone Adapter, for School Lab Home Education

• 【High Magnification Microscope for Adults】WF25X eyepieces alone or with 2X barlow lens, cooperate 4X 10X 40X rotating objective lens. The biological microscope provides 6 magnification settings, 100x, 250x, 1000x, 200X, 500X and 2000x. 6 different multiple combinations will show you the wonderful micro world..
• 【Dual Illumination System】Microscope has incident and transmitted LED light sources, Dual LED illumination system has separate switch and brightness adjustment Knob, meet different lighting brightness requirements. 0.65 NA single-lens condenser with disc diaphragm, provide high-resolution color-corrected images..
• 【High-quality Materials and Precise Focus】Monocular Microscope with solid metal frame and coarse/fine focusing knobs, ensures detail and precise focus adjustment,make a image more clearer and sharper. 45 ° observation angle to achieve a comfortable observation effect.
• 360° rotation, the angle can be adjusted according to the observation habit and position..
• 【Complete Science Accessory Kit】Microscope comes with phone adapter,wire shutter, 10 operating accessories, a box of microscope slides (10 prepared slides & 5 blank slides). Meet all the needs of biological observation..
• 【Explore the micro world】 This microscope is....

Drain Gel Drain Organic Cleaner-1 Quart 677825

• Designed to block the production of odors frequently occurring in drain lines, sewer lines and grease traps..
• Formulation incorporates specialized microorganisms in combination with biological support ingredients and essential growth factors..
• The most effective solution is the use of a highly concentrated biological product with specially selected bacteria strains..

Drain Gel Drain Organic Cleaner-1 Gallon 679525

• Designed to block the production of odors frequently occurring in drain lines, sewer lines and grease traps..
• Formulation incorporates specialized microorganisms in combination with biological support ingredients and essential growth factors..
• The most effective solution is the use of a highly concentrated biological product with specially selected bacteria strains..

Fluval Biological Enhancer for Aquariums (2 Pack)

• 2 Pack of Fluval Biological Enhancer for Aquariums - 16.9oz Each.
• Immediately establishes safe biological aquarium environment.
• Powerful responsive ammonia and nitrite elimination.
• Allows immediate introduction of fish, For Fresh and Saltwater Use.

Fluval C4 Bio-Screen - 3-Pack

• Replacement media for the Fluval C4 Power Filter.
• Bio-Screen provides an ideal surface area for biological activity to occur.
• Works to block debris and create an easy water flow.
• Custom fit biological and chemical filter media for the Fluval C3 Power Filter.

Roebic CA-1 Bacterial Compost Accelerator, 2.5 LBS