A pool pump hums along the patio while the skimmer lid sits on the damp concrete, but seconds after pouring the slurry, a chalky white plume billows right back through the return jets. Instead of polishing the water, an improper media grade slips past the fabric or quickly chokes the internal grids, spiking tank pressure within minutes. The result is murky water, hours of wasted pump run time, and fine sediment dusting the deep end that forces another messy backwash before anyone can swim.
A proper recharge should leave behind sparkling, crystal-clear water on the very first cycle without any blowback. Getting that glass-like finish comes down to selecting high-purity pool-grade diatomaceous earth that captures debris down to two microns, packaged in moisture-resistant quantities that do not cake up in the shed between washes. Sizing the powder charge cleanly to your grid area protects flow rates and spares the pump motor from avoidable strain. Here is how the leading media choices compare so the next recharge goes smoothly from the first scoop.
Filters to 2 microns!High-qualityAffordableDelivered to your door!1 - 50LB bag
Key specs
- Filtration Fineness
- Down to 2 microns
- Bag Weight
- 50 lb single bag
Pros:
- Traps fine debris down to 2 microns for sharp water clarity
- Large 50-pound bag supplies multiple filter recharges across the swimming season
- Standard pool-grade formulation coats grids cleanly without clogging manifolds
Cons:
- Heavy 50-pound bag requires two hands to lift and tear-free dry storage
- Specific grid dosing instructions must be verified before pouring
Filtering media for de pool filtersFor above ground and in ground de filter systemsDe can filter down to 3-5 micronsDiatomaceous earth consists of fossilized remains of diatoms, a type of hard-shelled algae50 Pound quantity bag
Key specs
- Particle Retention
- 3 to 5 microns
- System Compatibility
- Suitable for both above ground and in ground DE filter installations.
Pros:
- Rated to capture microscopic suspended solids between 3 and 5 microns
- Explicitly rated for both above ground and in ground DE filter systems
- Pure fossilized diatom media delivers reliable cake formation on filter elements
Cons:
- Filtration fineness stops at 3 to 5 microns rather than 2 microns
- Single 49.9-pound sack is bulky to maneuver around tight pool pads
All-natural high-grade filter material filters down to 2 micronsEasy-to-handle box that pours and stores cleanlyOutstanding filtration for a clear pool
Key specs
- Packaging Design
- Packaged in an easy-to-handle 24-pound box that pours cleanly and stores securely.
- Filtration Fineness
- Down to 2 microns
Pros:
- High-grade diatomaceous earth powder filters particles down to 2 microns
- Box container pours cleanly and resists moisture better than loose paper bags
- Compact 24-pound weight makes transport to the skimmer easy to handle
Cons:
- Smaller 24-pound volume runs out quickly on large commercial-sized filters
- Box format still requires measuring scoops for precise per-grid dosing
Filtering media for DE pool filtersFor above ground and in ground DE filter systemsDE can filter down to 3-5 micronsDiatomaceous earth consists of fossilized remains of diatoms, a type of hard-shelled algae100 pound quantity in two 50 pound bags
Key specs
- Bulk Packaging
- Contains two separate 50-pound bags
- Total media volume of 100 pounds
- Suited for multi-filter setups or full seasonal recharges
- Particle Retention
- 3 to 5 microns
Pros:
- 100-pound total volume split into two 50-pound bags for easier staging
- Compatible with both above ground and in ground DE filter configurations
- Traps fine debris down to 3 to 5 microns across extended pool cycles
Cons:
- Requires substantial dry storage space to protect both 50-pound bags from moisture
- Higher particle threshold than media rated down to 2 microns
Our customers tell us every day – There's no substitute for Celatom diatomaceous earth (DE) when it comes to filter aids for swimming pool filters. For over 50 years, EP Minerals' Celatom DE has been the worldwide choice for swimming pool and spa filtration products.EP Minerals unique DE and Perlite
Key specs
- Application Dosage
- Apply approximately 1 pound of DE powder per 10 square feet of filter surface, mixed into a water slurry before adding via skimmer.
- Water Clarity Target
- Filters down to 2 microns
Pros:
- Celatom formula filters debris down to 2 microns for sparkling clarity
- Includes clear dosage guideline of 1 pound of media per 10 square feet of filter
- Helps reduce routine chemical and sanitizer demand by pulling fine contaminants
Cons:
- Must be pre-mixed into a slurry in a bucket before feeding through the skimmer
- Mid-size 25-pound quantity may require reordering midway through heavy algae seasons
HIGH-CAPACITY FILTER: The Hayward ProGrid 48 sq. ft. diatomaceous earth filter offers superior performance, efficiency and water clarityMAXIMUM EFFICIENCY: High-impact grid elements provide up-flow filtration and top-down backwashing for maximum efficiencyDURABLE DESIGN: Durable, glass-reinforced co
Key specs
- Filtration Surface Area
- 48 sq ft
- Housing Material
- Constructed from glass-reinforced copolymer for corrosion resistance against pool water and weather.
- Warranty Coverage
- 3-year manufacturer warranty
Pros:
- Glass-reinforced copolymer construction provides corrosion-free tank durability
- Up-flow filtration and top-down backwashing maximize internal grid efficiency
- Easy-access heavy-duty clamp assembly simplifies seasonal disassembly and grid cleaning
- Backed by a 3-year manufacturer warranty for long-term peace of mind
Cons:
- Complete filter housing unit rather than replacement DE media powder
- Requires 75 pounds of equipment placement and fixed in-ground plumbing work
ECONOMICAL AND EFFICIENT: The Hayward Perflex Extended Cycle Diatomaceous Earth Pool Filter provides sparkling, crystal-clear water at an economical priceQUICKER CLEAN: Removes even the smallest particles the first time through for a quicker cleanPATENTED TECHNOLOGY: Patented Flex-Tube system effici
Key specs
- Internal Tube Design
- Features Hayward Flex-Tube technology that reuses the DE powder and debris layer to build fresh filtering surfaces.
- Warranty Coverage
- 2-year manufacturer warranty
Pros:
- Flex-Tube system reuses powder and dirt mixture to create fresh cleaning surfaces
- Extended cycle operation minimizes frequent backwashing and media waste
- Easy-access clamp design allows straightforward servicing of internal tubes
- Includes a 2-year manufacturer warranty on the filter assembly
Cons:
- Complete filter tank unit that requires separate purchase of DE media powder
- Internal flex tubes require thorough bumping technique rather than standard grid cleaning
BENEFIT: Keep your D.E. pool filter working at maximum performance and your pool looking amazingly blue with HTH D.E. Filter AidD.E. FILTER ENHANCEMENT: D.E. stands for diatomaceous earth, a filter media that traps and removes particles as much as 20 times smaller than sand or cartridge filtersBEAUT
Key specs
- Sanitizer Compatibility
- Compatible with all pool configurations using DE filters, including standard chlorine and saltwater systems.
- Package Size
- 24 lb single box
Pros:
- Traps microscopic debris up to 20 times smaller than traditional sand filters
- Safe for all DE pool systems including chlorine and saltwater sanitizers
- Convenient 24-pound package size is straightforward to haul to the poolside skimmer
Cons:
- Specific micron retention rating is not explicitly detailed in listed specifications
- Package does not include a measuring scoop for portioning per grid square footage
HIGH-CAPACITY FILTER: The Hayward ProGrid 60 sq. ft. diatomaceous earth filter offers superior performance, efficiency and water clarityMAXIMUM EFFICIENCY: High-impact grid elements provide up-flow filtration and top-down backwashing for maximum efficiencyDURABLE DESIGN: Durable, glass-reinforced co
Key specs
- Effective Filter Area
- 60 sq ft
- Tank Dimensions
- Height: 47.8 inches
- Width: 24.6 inches
- Assembled dry weight: 83 pounds
Pros:
- Generous 60-square-foot filtration area accommodates large in-ground pool volumes
- High-impact grid elements provide up-flow filtration and top-down backwash flow
- Heavy-duty glass-reinforced copolymer housing resists outdoor weather and chemicals
- Backed by a 3-year manufacturer warranty
Cons:
- Filter tank unit that requires purchasing standalone DE powder to operate
- Large 83-pound tank standing 47.8 inches tall requires ample equipment pad clearance
HIGH-CAPACITY FILTER: The Hayward ProGrid 36 sq. ft. diatomaceous earth filter offers superior performance, efficiency and water clarityMAXIMUM EFFICIENCY: High-impact grid elements provide up-flow filtration and top-down backwashing for maximum efficiencyDURABLE DESIGN: Durable, glass-reinforced co
Key specs
- Effective Filter Area
- 36 sq ft
- Filter Dimensions
- Height: 35.7 inches
- Width: 24.6 inches
- Assembled dry weight: 66 pounds
Pros:
- Compact 36-square-foot grid layout fits tighter in-ground pool equipment pads
- Glass-reinforced copolymer body delivers corrosion-proof weather resistance
- Up-flow filtration mechanism distributes DE powder evenly across grid elements
- Covered by a 3-year manufacturer warranty
Cons:
- Filter vessel assembly rather than replacement DE powder media
- Lower surface area than 48 or 60 sq ft models requires more frequent backwashing on large pools
💧【Efficient Filtration】Celatom Diatomaceous Earth for DE pool filters is a high-quality filtration media that effectively captures even the smallest particles, leaving your pool water crystal clear.💧【Premium Quality】Our diatomaceous earth is made from pure, high-grade materials, ensuring optimal p
Key specs
- Package Size
- 25 lb bag in box
- Media Type
- Fine-textured Celatom diatomaceous earth media formulated for standard swimming pool DE filters.
Pros:
- Celatom diatomaceous earth media captures tiny suspended pool particulates
- Comes in a manageable 25-pound bag inside a protective box for cleaner storage
- Lightweight, fine texture dissolves quickly into water for smooth slurry prep
Cons:
- Exact micron filtration threshold is not listed in product specifications
- Single 25-pound quantity will require multiple boxes for season-long recharges on large grids
Last update on 2026-10-08 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API
Does pool-grade diatomaceous earth filter down to 2 microns?
Yes, pool-grade diatomaceous earth media filters down to 2 microns, while certain media options specify particle capture between 3 to 5 microns. This microscopic filtration removes ultra-fine suspended particles that cause cloudiness, helping your system clarify water on the initial pass. Check the particle rating listed on the product container to confirm it matches the clarity standard you need for your pool.
How many pounds of diatomaceous earth do I need for my filter grid size?
The required weight of diatomaceous earth varies by filter model and total grid area, such as 36, 48, or 60 square feet. Because each tank design requires a specific volume of powder to coat its grids evenly, verify the exact dosage rating on your filter data plate or instruction manual before adding media through the skimmer. Adding the precise amount keeps circulation steady and prevents elevated tank pressure.
Can pool-grade DE media be used in both inground and above-ground filters?
Yes, standard diatomaceous earth filter powder is formulated for both above ground and in ground DE filter systems. The media functions effectively across standard high-impact vertical grid units with up-flow filtration as well as extended-cycle systems. If you are comparing system types for your setup, remember that a cartridge filter for swimming pool use relies on synthetic pleats rather than powder media to capture dirt.
Why does diatomaceous earth powder blow back into the pool?
Diatomaceous earth blows back through pool return jets when filter grids are torn, improperly seated, or when internal manifold seals fail. If water bypasses the fabric elements, raw media recirculates directly into the pool and settles along the floor. Inspect your grid assembly for fabric rips, and if you find damaged plastic fittings or hairline cracks on internal plumbing components, repair them with a reliable adhesive for pool filter repairs or replace damaged elements before recharging.
How does diatomaceous earth compare to sand and cartridge filter media?
Diatomaceous earth media traps and removes particles as much as 20 times smaller than sand or cartridge filters. Sand and standard cartridges allow fine silt and microscopic debris to slip back into circulation, but pool DE coats the internal grids to establish a tight barrier that catches debris down to 2 microns. This delivers faster water clearing after algae blooms, heavy swimmer loads, or seasonal openings.
What package size of DE powder is easiest to handle and store?
Package sizes include 24-pound and 25-pound boxes or bags, as well as 50-pound and 100-pound containers. A 24-pound or 25-pound box provides an easy-to-handle option that pours cleanly and stores neatly in residential sheds without tearing. Bulk 50-pound or 100-pound packages offer enough supply for multiple recharges, but they require a dry, sheltered location to protect the powder from absorbing ambient moisture.
