Series Filter
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 Austin Air PM400 Filter for Pet Machine Series  US $269.99
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 NEW GLASFLOSS MAGNA 1000 SERIES HEPA FILTER MAGGD1824B5 US $249.99
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 NEW BOX OF 2 GLASFLOSS MAGNA 900 SERIES ASHRAE FILTER US $249.99
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 IQAIR HEPA FILTER HEALTHPRO HEALTH PRO SERIES IQ AIR US $199.00
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 NEW GLASFLOSS MAGNA 1000 SERIES FILTER MAGGB23F23FB5 US $199.00
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 IQAir HealthPro Series HyperHEPA Filter US $199.00
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 NEW Blueair 500 600 Series Smokestop Filter US $172.47
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 NEW 500 600 Series Smokestop Filter US $172.42
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 IQAIR POST FILTER SLEEVES GCX SERIES REPLACEMENT IQ AIR US $169.00
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 Amaircare Plus Annual Filter Kit for 3000 4000 Series US $158.95
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 BlueAir 500 600 Series SmokeStop Filter Kit set of 3 US $149.99
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 BlueAir 500 600 Series SmokeStop Filter Kit US $149.95
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 Blueair 500 600 Series Smokestop Filter US $149.95
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 BLUEAIR 500 600 SERIES REPLACEMENT SMOKESTOP FILTER US $149.95
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 Blueair 500 600 Series Replacement SmokeStop Filter Set US $149.95
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 BLUEAIR 500 600 SERIES SMOKESTOP FILTERS 3 US $149.95
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 BlueAir 500 600 Series SmokeStop Filter 3 Pack US $149.95
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 IQAIR PREFILTER GCX SERIES PRE FILTER PURIFIER IQ AIR US $139.00
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 NEW Blueair Air Purifier 400 Series SmokeStop Filter US $138.80
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 NEW 400 Series Blueair SMOKESTOP Replacement Filters US $138.76
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 NEW GLASFLOSS MAGNA 1000 SERIES HEPA FILTER MAGGD2424B5 US $125.00
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 NEW BOX OF 4 GLASFLOSS EXCEL SERIES BAG FILTER SBG2424 US $124.99
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 Bemis 1051 AirCare Filter Fits 400 600 H12 Series US $124.88
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 Blueair 400 Series SmokeStop Filter Replacement US $119.99
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 Blueair 400 Series Smokestop Filter US $119.95
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 Blueair 400 Series Replacement SmokeStop Filter US $119.95
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 Blueair Air Purifier 400 Series SmokeStop Filter US $119.95
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 Blueair 400 Series SmokeStop Filter US $119.95
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 BLUEAIR 400 SERIES REPLACEMENT SMOKESTOP FILTER US $119.95
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 BlueAir 400 Series SmokeStop Filter US $119.95
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 Blueair 200 303 Series Smokestop Filter US $99.95
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 BLUEAIR 200 303 SERIES REPLACEMENT SMOKESTOP FILTER US $99.95
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 Blueair 200 Series Carbon Replacement Filter US $99.95
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 BlueAir 200 300 Series Carbon Filter US $99.95
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 IQAir GC Series Post Filter Sleeves 102501000 US $99.00
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 IQAIR® POST FILTER SLEEVES GC SERIES REPLACEMENT IQ AIR US $96.00
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 IQAir Post Filter Sleeves for GC Series US $95.00
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 IQAir GC Series Post filter Sleeves US $95.00
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 IQAir Post filter Sleeves for Dental Series US $95.00
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 BlueAir 500 600 Series Particle Filter 3 Pack US $79.95
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 BLUEAIR 500 600 SERIES PARTICLE FILTERS SET 3 US $79.95
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 BLUEAIR 500 600 SERIES REPLACEMENT PARTICLE FILTER US $79.95
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 Blueair 500 Series Particle Replacement Filter Set qty US $79.95
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 Blueair 500 600 Series Particle Replacement Filter Set US $79.95
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 BlueAir 500 600 Series Particle Filter Kit US $79.95
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 BlueAir 500 600 Series Filter Kit US $79.88
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 IQAir Pre Filter for GC Series US $78.00
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 IQAIR® GC SERIES PREFILTER PRE FILTER PURIFIER IQ AIR US $78.00
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 IQAIR® GC SERIES PREFILTER PRE FILTER PURIFIER IQ AIR US $78.00
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 IQAir Pre filter H11 for GC Series US $78.00
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 Panasonic Projectors Et acf100 Replacement Auto Cleaning Filter For F300 Series US $74.52
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 BLUEAIR 301 SERIES REPLACEMNT PARTICAL FILTER US $69.95
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 BlueAir 400 Series Particle Filter US $69.95
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 IQAir PreMax Pre Filter for HealthPro Series US $69.00
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 IQAir HealthPro Series Pre Filter US $69.00
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 IQAir HealthPro Series Pre Filter Element Air Purifier US $69.00
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 Mitsubishi M Series Deodorizing Filter Single Pack US $68.60
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Koi Filter: A Necessity For Healthy Koi
Magnificent and multi-colored Koi fish need an excellent Koi filter to maintain a clean and bacteria-free watery environment. Koi fish are very sensitive with their watery environment. Crystal clear water does not necessarily indicate clean water. It may contain colorless impurities such as nitrite and ammonia which are unsafe to Koi.
Koi filter is a basic requirement for Koi keeping and responsible in the process of removing waste products of Koi and other harmful chemical compounds from the Koi pond. Koi enthusiasts should choose the appropriate filter system to maintain the natural balance in the Koi pond’s environment.
Lack of a reliable filtration system will result to the following consequences: poor water quality which becomes toxic that leads to massive fish kill, propagation of other parasites and harmful life forms in the Koi pond, and discoloration (predominantly greenish) which will make the Koi pond unsightly and foul-smelling.
Several Koi professionals suggest that a suitable Koi filter system will have the capability to handle at least one third of the total water capacity of the pond. Assuming that your Koi pond can handle 1,500 gallons of water, you need to set up a filtration system that can handle 500 gallons of water. At the very minimum range, it should handle not less than 10% of the volume capacity of the pond.
Koi breeders must use a filtration system with mechanical filtration, and biological and chemical filtration to achieve better elimination and cleanup of harmful waste and chemicals in the Koi pond. These two types of filtration are essential for excellent maintenance of Koi ponds, and to ensure better health and proper growth of Koi.
Mechanical filtration removes debris and other solid waste elements in the pond. The widely-used materials for mechanical filtration are sand, pads, beads, and brushes. Water passing through these materials will trap solid wastes from the water, e.g. twigs, leaves, fish food, fish feces, etc. This mechanical filtration has series of filter stages until the smallest particle is strained and removed from the water.
Biological filtration use natural biological procedures to convert toxic waste elements excreted by Koi and those produced by decaying elements into less invasive compounds. Koi excrete ammonia which is harmful to Koi in large doses. In this filtration, ammonia is converted into nitrites by nitrifying bacteria significantly known as Nitrosomonas. ‘Good’ aerobic bacteria convert nitrites into nitrates by Nitrobacter which are no longer harmful to Koi.
These ‘good’ bacteria are identified as nitrifying bacteria that fill the pond in time. Chemical filtration stimulates carbon to remove ammonia and other organic waste products by adsorption. The process involves waste substances linked to the surface of the carbon. If you use a large biological filter, chemical filtration should not be utilized but it is still significant.
Another important element in filtration system is the use of a bottom drain. The drain is used to clean up pond water and pumped back to the filter chambers. This also enables total cleanup of the bottom surface of the pond. The ability to set up a good Koi filter system will help Koi enthusiasts maintain a clean, bacteria-free, and healthy Koi pond.
Is my filter holder too small?
I recently bought the Cokin P series filter holder for my Cokin P121S grad filter but I am getting really bad vignette in my shots at 17mm focal length and even at 20mm. I am wondering if my holder is too small cause in some shots I can see the holder in the sides of the frame, what can I do about this? Take back the holder for a bigger one or will that mean having to get a bigger filter too?
You can just saw off the second filter position on your existing holder, the wide angle ones can be difficult to come across.
Chris
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