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FilterFirst is a dual-density filter pad designed to capture both larger debris and finer particles in one pad. ClassicBlue has a more open bonded construction that provides dependable mechanical filtration and is a good choice when you want effective debris capture with strong water flow.

FilterFirst handles everyday mechanical filtration by capturing larger debris along with finer particles. A Polishing Pad is much denser and is designed to capture extremely fine suspended particles for an extra-clear, polished-water appearance.

Incoming water should contact the softer, more open side first. This allows larger particles to be captured before water moves through the denser layer.

No. Because FilterFirst uses a layered nonwoven construction rather than uniform micron-sized openings, it does not have a true micron rating. If filtration at a specific micron level is needed, use a micron-rated Polishing Pad.

Not necessarily. Either pad can be used on its own depending on filtration needs. Some aquarium owners combine different mechanical media, but adding additional layers can reduce water flow, so more is not always better.

No. FilterFirst provides mechanical filtration and is designed to capture suspended debris. For odors, discoloration, and certain dissolved substances, use activated carbon or another appropriate chemical filtration media.

FilterFirst itself is mechanical filtration and generally does not need to be removed when using aquarium medications. Activated carbon, however, may remove some medications from the water, so follow the medication manufacturer’s instructions.

For everyday mechanical filtration with both coarse and fine debris capture, choose FilterFirst. For durable, open mechanical filtration with strong water flow, choose ClassicBlue. For extremely fine particle removal and extra-clear water, add a Polishing Pad after regular mechanical filtration.

Yes. Water should pass through FilterFirst first so larger debris is removed before reaching the Polishing Pad. This helps prevent the polishing media from clogging too quickly.

The soft side should face the incoming water. Water then passes through the denser portion of the pad for fine-particle filtration.

A Polishing Pad captures very fine suspended particles that standard filter media may miss. It is designed to improve water clarity and give the aquarium a cleaner, polished appearance.

A 50-micron pad is finer than a 100-micron pad and can capture smaller particles. Because finer media captures more debris, it may also require more frequent cleaning.

Yes. Because polishing media is very dense, water flow can decrease as the pad collects debris. Using FilterFirst or another mechanical pad before the Polishing Pad can help it stay cleaner longer.

They can help capture very fine suspended particles, including some suspended algae. If cloudy or green water continues to return, filtration alone may not solve the underlying cause. Water quality, lighting, feeding, and aquarium maintenance should also be evaluated.

Yes. Aquatic Experts cut-to-fit filter media can be trimmed for many hang-on-back filters, canister filters, sumps, and custom filtration systems.

Yes. FilterFirst works well as mechanical filtration in many canister filters. Place it early in the filtration path so debris is removed before water reaches biological and chemical media.

Yes, as long as the pad is cut to the proper size and does not block water flow. Make sure water can pass through the media rather than bypassing it.

A good general rule is coarse to fine. Start with mechanical media that removes larger debris, followed by finer mechanical or polishing media, then chemical media such as activated carbon when needed, and biological media where appropriate.

In many filters, yes. Aquatic Experts cut-to-fit media can be trimmed to fit a wide range of filter systems. Some disposable cartridges also contain activated carbon or provide surface area for beneficial bacteria, so make sure the replacement setup still provides the types of filtration the aquarium needs.

FilterFirst can often be gently rinsed to remove trapped debris and reused while the pad remains in good condition. Replace it when it becomes difficult to clean, begins breaking down, or restricts water flow.

There is no single schedule that works for every aquarium. Check the pads regularly and clean or replace them when they become heavily loaded with debris or begin restricting water flow. Heavily stocked aquariums may require more frequent maintenance.

It can. Beneficial bacteria live throughout the aquarium and on established biological filter media. Avoid replacing all established biological media at the same time whenever possible. Mechanical pads can be cleaned or replaced as needed, but established biological media should be handled more carefully.

Watch for reduced water flow, water bypassing the pad, or a pad that is heavily loaded with debris. Rinse reusable media when needed and replace it when it becomes difficult to clean, begins breaking down, or continues restricting water flow.

Water bypass usually means the pad is clogged, too dense for the filter’s flow rate, improperly fitted, or there are too many layers restricting flow. Clean or replace the pad and make sure water has a clear path through the filtration media.

A 100-micron sock provides finer filtration and captures smaller particles, but it will generally clog faster. A 200-micron sock allows more flow and usually lasts longer between cleanings. Many hobbyists use 200 micron for everyday filtration and switch to 100 micron when they want extra water polishing.

No. Micron rating refers to the size of the openings in the material, not the thickness of the sock. A 100-micron sock has smaller openings than a 200-micron sock.

The socks are untreated. The felt remains soft and flexible so water can pass through while debris is trapped.

Choose a ring diameter and length that fit the sump or filter-sock holder. Ideally, the sock should hang freely without resting on the bottom of the sump.

Not necessarily. Use the length that properly fits the sump. A sock hanging partly in the water can help reduce splashing, but it should not lie on the bottom of the sump.

No. Aquatic Experts ring-style filter socks are not designed to properly fit Red Sea Reefer filter-sock holders.

It depends on the aquarium’s bioload, but the important thing is to change or clean them before they become clogged or begin overflowing. Heavily stocked systems may require more frequent changes.

Yes. They are designed to be reusable. Clean, rinse, and dry them thoroughly before returning them to the aquarium, and make sure no cleaning chemicals remain.

Replace it when the material becomes thin, develops holes, or the stitching or seams begin to fail.

Choose based on the size of the media you need to contain. Extra Fine is for very small resins such as Purigen and Chemi-Pure; Fine works well for activated carbon and other small granulated media; Max Flow is designed for larger biological media such as Bio Balls, ceramic media, rock and crushed coral.

The current Fine Mesh Bag is approximately 450 microns, giving you a balance of media containment and water flow.

Use the Extra Fine Mesh Media Bag. Its very small openings are designed to contain fine resin media that could escape through larger mesh.

The Fine Mesh Media Bag is a good choice for most small granulated activated carbon. Very fine media may require the Extra Fine bag.

Use the Max Flow Mesh Media Bag. Its larger openings allow excellent water flow around biological filter media.

They are designed to work with a wide variety of aquarium filters, including canister filters, sumps and power filters. Choose a bag size that fits the space available in your particular filter.

Yes. The bags are designed for aquatic filtration and can be used in freshwater and saltwater systems; appropriate larger-mesh bags can also be used for pond filtration.

Yes. The bags are designed to be emptied, cleaned and refilled with fresh filter media as needed.

Avoid packing the bag too tightly. Water needs room to move through and around the media for effective filtration. Fill the bag enough to keep the media contained while still allowing good water flow.

Bio Balls provide a large amount of surface area for beneficial bacteria to grow. These bacteria are an important part of biological filtration and help break down harmful waste such as ammonia and nitrite in aquariums and ponds.

Place Bio Balls after your mechanical filter media whenever possible. A filter pad can remove larger debris before the water reaches the Bio Balls, helping keep biological media cleaner and allowing water to flow freely around it.

Yes, beneficial bacteria can still grow on Bio Balls placed directly in the water. However, they generally work best in a filter chamber or mesh media bag where water is continuously flowing through them.

Yes. Bio Balls are lightweight and can float or move with the current. A mesh media bag is a simple way to keep them contained.

Usually very little cleaning is needed when mechanical filtration is placed before the Bio Balls. In ponds or systems where debris reaches them, they may occasionally need a gentle rinse.

Gently rinse or swish them in old aquarium or pond water or dechlorinated water. Avoid rinsing established Bio Balls with chlorinated tap water because chlorine can harm the beneficial bacteria living on the media.

Aquatic Experts 1.5-inch Bio Balls are made from 100% polypropylene and are designed for biological filtration in freshwater, saltwater, ponds and other aquatic filtration systems.

Bio Balls are made from durable high-density plastic and are designed to maintain their shape rather than degrade or wear out during normal use. Unlike disposable filter media, they generally do not need routine replacement.

Lava rock contains small pores that can collect debris and become difficult to clean. Aquatic Experts Bio Balls use an open, spined design that provides surface area for beneficial bacteria while allowing debris and water to move through more easily. They are also much lighter to handle.

A starting point is about 30 Bio Balls per 100 gallons for a typically stocked pond. The amount needed can vary depending on fish load and feeding, so continue monitoring ammonia and nitrite levels.

The time needed depends on factors such as bioload, water conditions, whether established media is already present, and whether beneficial bacteria are being added. Monitor ammonia and nitrite while the biological filtration becomes established.

The Black Coarse Pad captures larger debris while maintaining strong flow. The Cream Coarse Pad is an extra-thick 2-inch coarse option for heavy debris loads. The White Fine Pad captures smaller particles for improved water clarity.

Always filter coarse to fine. Pond water should pass through a coarse pad first to remove larger debris, then through the White Fine Pad to capture smaller particles. This helps prevent the fine pad from clogging too quickly.

Yes. This is an especially good setup for ponds under trees or ponds with heavy debris. The coarse pad catches leaves and larger waste before the water reaches the fine pad.

Yes. They are designed to be cut to fit many pond-filter configurations. A cardboard template and strong scissors or a utility knife can make custom fitting easier.

The coarse and fine pond pads do not have a true micron or PPI rating because of their nonwoven fiber construction. PPI is generally used for sponge media, while micron ratings are better suited to media with consistently sized openings.

No. The black color does not come from activated carbon. If you want chemical filtration for odors or discoloration, use a dedicated activated-carbon product separately.

Yes. Aquatic Experts pond pads are durable and designed to be rinsed and reused while they remain structurally sound and maintain proper water flow.

Mechanical pond pads do not need replacement on a fixed calendar. Rinse and reuse them while they remain structurally sound and allow good water flow. Replace them when they begin breaking down or no longer perform well after cleaning.

Activated carbon provides chemical filtration by adsorbing dissolved contaminants. It can help remove odors, discoloration and compounds such as tannins while improving water clarity.

The two perform different jobs. Filter pads provide mechanical filtration by trapping suspended debris, while activated carbon provides chemical filtration for odors, discoloration and dissolved contaminants. You can use both when your aquarium needs both types of filtration.

A general guideline is approximately 1/8 cup per 10 gallons of aquarium water, which is equivalent to about 1/2 cup per 40 gallons.

Actual lifespan depends on the amount of dissolved organic material in the aquarium, but about once a month is a useful general starting point.

Place activated carbon after your mechanical filtration whenever possible. Removing debris first helps keep the carbon cleaner and allows water to flow effectively through it.

Yes. Carbon pieces can rub together during shipping and create a small amount of dust, so a short rinse before use is recommended.

No. Aquatic Experts Premium Carbon is designed for aquatic filtration and is not recommended for drinking-water filtration.

Not necessarily. Some aquarium owners use activated carbon continuously, while others use it only when they want help removing odors, discoloration, tannins or other dissolved contaminants. Whether you need it depends on your aquarium and filtration goals.

Activated carbon is not a replacement for biological filtration. It is primarily used to adsorb odors, discoloration and certain dissolved organic compounds. Beneficial bacteria and proper aquarium maintenance are still needed to manage ammonia and nitrite.

First determine what is causing the cloudiness. KloudAway is designed for suspended particles in freshwater aquariums and works by clumping tiny particles so mechanical filtration can remove them. It is not designed for green water caused by free-floating algae and should not be used in saltwater aquariums.

Usually not. Green water is generally caused by free-floating algae, which continuously reproduce. Addressing the underlying algae problem may require changes to lighting, nutrients, maintenance or an appropriate treatment method.

Generally, no. Rinsing new media is a good practice to remove possible dust from cutting, packaging or shipping, but a water change is not normally required simply because a clean mechanical pad was installed without rinsing.