Undergravel filters clean and filter the water by pulling it down through the gravel, trapping contaminates in the gravel and leaving the water clear and healthful for fish. The gravel provides both the mechanical filtration needed to trap the large particulates of excess food and fish feces, and the surface area to cultivate biological activity for cleaning the water of dangerous biological by-products such as Ammonia.

System-II has a true Wet/Dry Biological Filtrations System built into the back of the aquarium.

SeaClear System II Aquariums feature:
• Includes 3-chamber wet/dry filter that accommodate biological, mechanical, and chemical filter media. (all media included)
• Includes space for heater and optional Explore Protein Skimmer (SEA20200 listed below).Protein Skimmer requries additional medium-sized air pump (purchased separately.)
• No outside plumbing or noise.
• A fraction of the price of an aquarium and separate filter system. (Our SeaClear aquariums come with a full hood and fluorescent fixture installed, so remember to add in the cost of the hood and light fixture when comparing glass and acrylic pricing.)(See: Aquarium Fluorescent Lighting for bulbs.)
• Set-up and ready to run.
• Good for both fresh and saltwater hobby.

System II Wet/Dry Filtration System
1. 4-way adjustable skimmer gate prevents fish from entering filter.
2. Quick change prefilter makes cleaning simple.
3. Heater or Optional Protein Skimmer chamber.
4. Bio-Aire Driptray distributes water evenly over biological filtration and enhances aeration.
5. High surface area biological media for exceptional action.
6. Air-injection nozzle.
7. Media tray for chemical and carbon filtration.
8. 350 gph submersible pump and turbulence manifold provide excellent circulatioin unsurpassed by any other built-in filter.
9. Clear slot to view water level in filter.

See the pre-plumbed back side in the larger image
See Beautiful SeaClear Stands

Acrylic Tanks and Stands are a Special Order Item - Factory Direct Ship. Although they're usually shipped promptly, they are made to order and can take up 2-3 weeks for delivery-- especially pre-Christmas. Order early.

Features:
• 3 dimensional view, from 5 sides. Back panel comes in three colors.
• Smooth, rounded corners and seamless front for unobstructed viewing.
• 17 times stronger than glass and half the weight.
• Safe, easier to carry, easier to set up.
• Virtually breakproof and leakproof.
• Any scratches can be easily buffed out using a special polishing compound. So resistant to damage that acrylic is used in most commercial aquariums.
• Easy to shape, weld and drill.
• Up to 4% clearer. Do not discolor with exposure to light (because of the UV stabilization process).
• Acrylic is impervious to corrosion from saltwater and medications.
• Safe for fresh, saltwater and reef environments.
• SeaClear aquariums come with a full hood with UL Standard 1018 electrically approved 24" fluorescent fixture installed, so remember to add in the cost of the hood and light fixture when comparing other glass or acrylic aquariums.
• Limited lifetime warranty against leakage due to materials and workmanship.

Features:
• 3 dimensional view, 6 sides. Back three panels come in three colors.
• Smooth, rounded corners and seamless front for unobstructed viewing.
• 17 times strong than glass and half the weight.
• Safe, easier to carry, easier to set up.
• Virtually breakproof and leakproof.
• Any scratches can be easily buffed out using a special polishing compound. So resistant to damage that acrylic is used in most commercial aquariums.
• Easy to shape, weld and drill.
• Up to 4% clearer. Do not discolor with exposure to light (because of the UV stabilization process).
• Acrylic is impervious to corrosion from saltwater and medications.
• Safe for fresh, saltwater and reef environments.
• SeaClear aquariums come with a full hood with UL Standard 1018 electrically approved 24" fluorescent fixture installed, so remember to add in the cost of the hood and light fixture when comparing glass and acrylic pricing.
• Limited lifetime warranty against leakage due to materials and workmanship.