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Best Filter Substrate

Biohome SuperBioGravel Aquarium Filter Media (1 Pound)

  • 1Pound Biohome Super Biogravel Aquarium Filter/Substrate Media.
  • Unique structure, absorbs water like no other media on market.
  • Media for under gravel filter, internal filters, HOB filters, small canister filters and DIY filters made from ornaments..
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Rainbow Symphony Solar Filter 70mm Black Polymer

  • Make a filter on your own for any telescope / binoculars / camera, and for a fraction of what factory made filters cost..
  • The sun will appear in a natural orange color when viewed through your telescope using this filter..
  • WARNING: ALWAYS MAKE SURE THE FILTER IS WELL ATTACHED TO THE TELESCOPE/BINOCULARS, USING STICKY TAPE, TO KEEP IT FROM FALLING WHILE OBSERVING!.
  • Silver - black polymer is the most common filtering material for observing sunspots and granulation, through telescopes and binoculars..
  • These sheets are a quality product of Thousand Oaks Optical, Arizona, a manufacturer of safe solar filters for over 30 years. "Stronger than Mylar with the filtering properties protected within the substrate. Guaranteed five years.".
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Sterilized Rye Berry Mushroom Substrate with Self Healing Injection Port (6)

  • myco bags filter patch bags：20cmx12cmx50cm 5"(gusset) x19" (long)x 8”(wide), typically for 5-8 pounds block,0.5 micron filter patch,Heavy duty 3 mil polypropylene Sealable, Autoclavable and Durable Easily grow your own mushrooms in bulk 100% premium mushroom growing substrate Fortified with all necessary vitamin's and minerals Moisture content guaranteed and ph balanced Works perfectly with fully colonized spawn.
  • American edible species breathable bag:Polypropylene breathable bag/ PP breathable bag permeability barrier,with microporous filter patches that allow gas exchange but preclude the passage of contaminants..
  • spawn bags Suitable for many kinds of bacteria：Mushrooms and bamboo fungus Ganoderma mushroom,Apply to Wood chips.
  • Universal respiratory membrane Spawn 0.5 Micron Filter,3 Mil Polypropylene.
  • mushroom growing bags with Breathable window 5.5cmX5.5cm.
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Solomark 1.25 Inch UV IR Cut Block Filter Infra Red Filter CCD Camera Interference Uv Filter

  • Unmatched 98% Average Transmission!  Freedom from ghost images (very low reflection multi-coating, Striae-free, and plane-parallel substrate)..
  • Extremely Sharp Cutoff at 680nm  (leaves all the visible red, including the important 656nm H-alpha emission line)..
  • Sharp cutoff below 420nm.  Eliminates violet halos around bright stars (more effectively than simpler so-called Minus Violet photographic filters)..
  • True optical quality glass substrate and coatings. Why spend all your money on quality primary optics - only to place a lower grade filter optic in the path.
  • Combine with any of the other Baader filters, to deliver the sharpest images possible..
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TonGass 60-Pack Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs - Large 8'x5'x20' Extra Thick 80 Micron (=3 Mil)| Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags

  • AUTOCLAVABLE MUSHROOM GROWING BAGS - Not all mushroom grow bags are made the same. Choose bags like these 60-pack autoclavable mushroom spawning and growing bags. Made from polyethylene (PE) plastic, these bags are designed to withstand high temperatures that come with the substrate sterilization process..
  • LARGE 8" X 5" X 20" CLEAR MUSHROOM SPAWN BAGS - Save a considerable amount of space by spawning and growing more mushrooms in one grow bag. At 6 inches long, 5 inches wide, and 20 inches high, these myco bags provide more than enough room for growing, spawning, and fruiting mushrooms. Even at this height, these side-gusseted bags can stand upright and hold the weight of their contents..
  • DURABLE, STRONG, AND TEAR-RESISTANT MUSHROOM FRUITING BAGS - The bags are also thicker than average mushroom grow bags at 6mm thick. This thickness, coupled with high-quality materials, make these mushroom grow bags stronger, more durable, and more tear-resistant than average grow bags of the same size and design. They can withstand heat and a considerable amount of swelling. Whether you use an autoclave or pressure cooker to sterilize your substrate, these mushroom grow bags will work perfectly.
  • EFFECTIVE AND EFFICIENT CONTAMINANT FILTERING WITH 0.2 MICRON FILTER PATC....
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8\x8\ Solar Filter Sheet for Telescopes, Binoculars and Cameras

  • Silver - Black polymer is the most common filtering material for observing sunspots and granulation, through telescopes and binoculars..
  • These sheets are a quality product of Thousand Oaks Optical, Arizona, a manufacturer of safe solar filters for over 30 years. "Stronger than Mylar with the filtering properties protected within the substrate. Guaranteed five years.".
  • Make a filter on your own for any telescope / binoculars / camera, and for a fraction of what factory made filters cost..
  • The sun will appear in a natural orange color when viewed through your telescope using this filter..
  • WARNING: ALWAYS MAKE SURE THE FILTER IS WELL ATTACHED TO THE TELESCOPE/BINOCULARS, USING STICKY TAPE, TO KEEP IT FROM FALLING WHILE OBSERVING!.
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Boomr Bag (5 lbs) Sterile Manure-Based Bulk Mushroom Substrate | Premium Horse Manure Blend | Grow Bigger Flushes w/ Maximum Yield Formula | Handmade by Expert Mycologists in Maine, USA | North Spore

  • GROW BIGGER FLUSHES: Our best-selling Boomr Bag is a sterile manure-based bulk mushroom substrate formulated by mycologists to maximize your mushroom yield. Use Boomr Bag in monotubs, filter bags, and outdoor beds. Or, grow mushrooms from the bag or tray in a humidity-controlled grow room or Martha set up..
  • PERFECTED FOR DUNG-LOVING SPECIES: It features a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!).
  • MIX WITH COLONIZED GRAIN SPAWN: We recommended 1 lb of colonized grain spawn for every 5 lbs of Boomr Bag sterile substrate. (Higher inoculation rates may improve your success.).
  • STORE UNTIL READY: Boomr Bags can be stored for several months before use. They should be stored at room temperature out of direct sunlight. No refrigeration necessary..
  • TRUSTED BY GROWERS: Our Boomr Bags are sterilized in a commercial-grade autoclave. Sterility is verified using biological indicators and temperature sensors..
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Thousand Oaks Optical 4\x4\ Solar Filter Sheet for Telescopes, Binoculars and Cameras

  • Make a filter on your own for any telescope / binoculars / camera, and for a fraction of what factory made filters cost..
  • The sun will appear in a natural orange color when viewed through your telescope using this filter..
  • WARNING: ALWAYS MAKE SURE THE FILTER IS WELL ATTACHED TO THE TELESCOPE/BINOCULARS, USING STICKY TAPE, TO KEEP IT FROM FALLING WHILE OBSERVING!.
  • Silver - black polymer is the most common filtering material for observing sunspots and granulation, through telescopes and binoculars..
  • These sheets are a quality product of Thousand Oaks Optical, Arizona, a manufacturer of safe solar filters for over 30 years. "Stronger than Mylar with the filtering properties protected within the substrate. Guaranteed five years.".
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Mushroom Monotub Kit- Mushroom Grow Kit for Mushroom Fruiting ，with Filter and Plug， Mushroom Grow Bags is Inflatable， Easy to Store and Clean

  • （Scientifically Designed） – a Monotub that Conforms to Mushroom Growth, 10 Vents for Fresh air Exchange, Compact top lid for Optimal Moisture Retention，a Convenient Drain to Dispose of Excess Water after Substrate Rehydration, Can be cleaned and deflated when not in use Reusable.
  • (High quality accessories) – Monotub With Plug and two Different Densities Filter for Fruiting Stage, Temperature and Humidity can be Controlled According to the Filter of Different Densities.
  • （Appearance） – The Transparent PVC Mushroom Monotub Enables you to Observe the Mushroom Growing Process, the Thick PVC Structure is Durable, the Inflation and Deflation are Easy to Operate.
  • This is a small-yield Mushroom Monotub that meets your needs for growing Mushrooms at home.
  • (Product Contains) 1*Monotub, 1*air Pump, 10* Plug, 10* low Density Filter, 10 High Density Filter.
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SVBONY SV132 Telescope Filter H-Beta Filter 25nm 1.25 inches Eyepiece Filter for Horsehead Nebula California and Cocoon Nebulae in Dark Skies

  • SV132 H-Beta eyepiece filter makes it possible to view the elusive Horsehead, California, and Cocoon Nebulas in dark skies.
  • Great used with a moderate to large aperture telescope and clear dark skies.
  • Optical high precision double side polishing.
  • Filter substrate is fine-optically polished to 1/4 wave and.
  • Precision double-sided optical coatings improve transmission and cut-off depth.
  • Executes with a transmission of over 90% and completely rejects light pollution.
  • High value transmission of pass-band and optical density of off-band is assured through planetary rotation system, a homogenous and precise coating procedure.
  • The high optical quality of SV132 filters guarantees no loss in sharpness or contrast.
  • Filter with metal mount 1.25" filter threads.
  • Threaded to fit 1.25" eyepieces and threaded diagonal barrels.
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Seachem Flourite Black Clay Gravel - Stable Porous Natural Planted Aquarium Substrate 15.4 lbs

  • GRAVEL: Seachem Flourite Black is a specially fracted stable porous clay gravel for the natural planted aquarium. Its appearance is best suited to planted aquaria, but may be used in any freshwater aquarium environment..
  • AQUARIUM BED: Gravel modifiers such as laterite are not necessary when using Seachem Flourite Black as this product is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels..
  • SET-UP: When adding water to the aquarium, fill slowly to avoid disturbing Flourite Black substrate bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly on to the gravel bed. Initial cloudiness is normal, but to remove this simply use mechanical filtration.
  • COMPATIBLE: Flourite Black substrates will work fine with an under gravel filter and will not soften or decompose to an unsuitable state within your tank.Flourite substrates will work fine with an UGF.
  • SAFETY: Seachem Flourite Black is not chemically coated or treated, thus does not alter the pH of the water. Flourite Black is beneficial for the life of the aquarium and need not be replaced..
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Blue Light Blocking Glasses Women Bluelight Blocker Computer Cateye Clear Cat Eye Eyeglasses Frame Pink ANDWOOD

  • 【SUBSTRATE ANTI-BLUE LIGHT LENS】 - ANDWOOD blue blocker glasses women are use substrate anti-blue light lens: Filter high level blue light from digital screen of computer, phone and TV,maintain HD clear vision with less color distortion..
  • 【EYEGLASSES PROTECTION FOR YOUR EYES】 - These blue light blocking glasses for women alleviates visual fatigue and discomfort from long periods of web surfing, gaming and working under fluorescent lights with UV400 protection can effectively block 100% harmful UV rays and glare reduction..
  • 【METARIAL AND DESIGN】 - This bluelight glasses womens is made light weight plastic frame with anti-blue light polycarbonate lens, spring hinge provide you comfort fit. Cat eye design for women shine you style out. Best Gift for your eyes' health!.
  • 【SLEEP BETTER】- Wearing these computer glasses women while viewing your digital screens at night may help encourage melatonin production, which can help you maintain normal sleeping patterns..
  • 【Blue Light Glasses Cateye】 - Bring it anywhere: Take these gaming glasses with you to school or at work. The blue light blocking glasses come with a leather case, which will fit easily in your bag, car, or backpack..
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JJC Multi-Coated 46mm UV Filter for Nikon Z30 Z50 Z fc Zfc with Nikkor Z DX 16-50mm Kit Lens for Panasonic G7 with Lumix G Vario 14-42mm Kit Lens & Other Lenses with 46mm Filter Thread

  • Helps absorb ultraviolet light and reduce the bluish cast of daylight.
  • Helps reduce dust, moisture, and scratches from reaching lens elements.
  • Crafted from 0.03" Japanese famous optical glass, double sides 12-layers of multi-resistant coating prevents internal ghosting and reflections while providing over 99.5% light transmission.
  • 12-layers of multi-resistant coating also offers greater protection to the filter substrate and helps it to stay clean for longer than with uncoated UV filters.
  • Ultra slim design (only 0.12" thick) to avoid vignetting on wide angle lenses.
  • 1x filter factor, adjustments to exposure time are not required, unlike other types of filter such as CPL filter, ND filter,etc..
  • Useful as a basic protective filter to leave on lenses at all times.
  • Compatible with any lens with 46mm diameter filter thread - This UV filter is double threaded, has 46mm inner thread(male) and 46mm outer thread(female), this design allows you to put on any 46mm thread accessories such as lens cap, screw-in type lens hood to the front of the filter.
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