![]() |
![]() Pond Pressured Filter UV BIO FILTER 1500gal Algae Free $70.98 Time Remaining: 12d 11h 41m Buy It Now for only: $70.98 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4h 39m |
![]() Bio Balls Bioballs Bio Filter Media Canister Filter Bacteria Growth Media Lot $5.00 Time Remaining: 16d 17h 9m Buy It Now for only: $5.00 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 (1 Bid) Time Remaining: 2d 8h 55m |
![]() Marineland BIO Filter Balls C 160 C 360 90pc $5.89 Time Remaining: 18d 13h 9m Buy It Now for only: $5.89 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 5h 29m |
![]() 24 Regular Large Whisper Bio Bags Filter Cartridge Pads $29.99 Time Remaining: 28d 10h 21m Buy It Now for only: $29.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 11h 22m |
![]() Aquarium Filter 500g Activated Carbon 30pcs Bio Ball 500g Ceramic Ring Combo $14.99 Time Remaining: 21d 11h 57m Buy It Now for only: $14.99 |
![]() Marineland Penguin 150 Bio Wheel Power Aquarium Filter Brand New $12.50 (7 Bids) Time Remaining: 8h 1m |
![]() 13W UV 1500gal Fish Pond Pressurized Bio Filter + 790gph Submersible Water Pump $118.99 Time Remaining: 14d 13h 7m Buy It Now for only: $118.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 1d 8h 41m |
![]() 1500g Aquarium Bio Ceramic Ring w Filter Media Bag $17.99 Time Remaining: 19d 12h 5m Buy It Now for only: $17.99 |
![]() Marineland Emperor 400 BIO Wheel Power Filter for Aquarium or Fish Tank $21.50 (10 Bids) Time Remaining: 1d 6h 30m |
![]() Pond Pressured 13w Filter UV BIO FILTER 1500gal Pressurized $71.88 Time Remaining: 27d 18h 51m Buy It Now for only: $71.88 |
![]() GAIN AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 403B $89.99 Time Remaining: 8h 23m |
![]() 100pcs Aquarium 125 Bio Balls Filter Media FREE Bag Wet Dry Koi Fish Pond Reef $18.99 Time Remaining: 28d 13h 33m Buy It Now for only: $18.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 2d 11h 22m |
![]() Replacement Pads for Jebao Bio Pond Filter PF30 CF30 $43.99 Time Remaining: 7d 15h 44m Buy It Now for only: $43.99 |
![]() FINE AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 403B $89.99 Time Remaining: 10h 41m |
![]() Aquarium Filter 500g Ceramic Rings 30pcs Bio Ball Combo with Media Bag $11.99 Time Remaining: 21d 10h 33m Buy It Now for only: $11.99 |
![]() FINE AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 404B $106.99 Time Remaining: 11h 58m |
![]() 4 pcs Bio Sponge Filter Betta Fry Aquarium Fish Tank Single Sponge S XY 2830 $8.84 Time Remaining: 18d 13h 26m Buy It Now for only: $8.84 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 2d 4h 39m |
![]() Replacement Filter Pads For Jebao CF 10 PF 10 Bio Pond Filter Coarse Fine $23.99 Time Remaining: 26d 16h 52m Buy It Now for only: $23.99 |
![]() GAIN AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 404B $106.99 Time Remaining: 16h 36m |
![]() 300pcs Aquarium 125 Bio Balls Filter Media FREE Bag Wet Dry Koi Fish Pond Reef $34.99 Time Remaining: 28d 13h 29m Buy It Now for only: $34.99 |
![]() New 7000gal Capacity Koi Pond Bio Filter w 18watts UV Sterilizers Clarifiers $214.95 Time Remaining: 2h 21m |
![]() Pond Pressured 13w Filter UV BIO FILTER 1500gal with 790 GPH pump $113.99 Time Remaining: 24d 13h 2m Buy It Now for only: $113.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 3d 3h 32m |
![]() 3 12X105 Filter Media Bags Bio Balls Carbon for Aquarium Fish Koi Pond $7.77 Time Remaining: 3h 27m Buy It Now for only: $7.77 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 4h 39m |
![]() BIO FIBER BIOLOGICAL FILTER FRESH SALT WATER Durable Bonded Fiber Materail $3.75 Time Remaining: 6d 12h 31m Buy It Now for only: $3.75 |
![]() Bio Pressure filter UVC 13watts 4000Gallon $189.95 Time Remaining: 2h 21m |
![]() TETRA WHISPER BIO BAG FILTER CARTRIDGES 48PK LARGE $38.99 Time Remaining: 6d 11h 43m Buy It Now for only: $38.99 |
![]() 13W UV 1500gal Fish Pond Pressurized Bio Filter + 528gph Submersible Water Pump $89.99 Time Remaining: 10h 2m |
![]() Bio Sponge Filter Betta Fry Fish Tank Single Sponge $3.99 Time Remaining: 18d 14h 6m Buy It Now for only: $3.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() Air Driven Bio Sponge Corner Filter For 10 Gallons Fish Tank Fry Guppy Discu $7.59 Time Remaining: 22d 10h 2m Buy It Now for only: $7.59 |
![]() Aquarium Pond Black Plastic 32mm Bio Ball Filter 10 Pcs $4.54 Time Remaining: 3h 50m |
![]() Marineland PA11486 Canister Filter Bio Balls PC 160 360 90 BioBalls New $14.88 Time Remaining: 21d 21h 37m Buy It Now for only: $14.88 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() 2000 pcs Bio Balls 125 Aquarium Koi Fish Pond Filter Wet Dry Outdoor Fountain $113.89 Time Remaining: 20d 10h 34m Buy It Now for only: $113.89 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() 2x Aquarium Bio Ball with Reusable Filter Media Bag Total 60pcs $10.99 Time Remaining: 21d 9h 39m Buy It Now for only: $10.99 |
![]() Fish Tank Ceramic Rings Biological Filter Media and 30 Bio Balls For Filtration $8.49 Time Remaining: 5h 29m Buy It Now for only: $9.95 |
![]() Bio Foam 2 Pack for Fluval 304 305 306 404 405 406 A237 Filter Media $7.49 Time Remaining: 7d 16h 44m Buy It Now for only: $7.49 |
![]() GET AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 404B $106.99 Time Remaining: 1d 9h 46m |
![]() 8 pcs Bio Sponge Filter Betta Fry Aquarium Fish Tank Single Sponge S XY 2830 $15.68 Time Remaining: 14d 15h Buy It Now for only: $15.68 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $106.99 Time Remaining: 4d 16h 54m Buy It Now for only: $106.99 |
![]() Bulk Bio Balls 125 Aquarium Koi Pond Filter Wet Dry $30.99 Time Remaining: 11d 9h 8m Buy It Now for only: $30.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() 1000g Aquarium Bio Ceramic Ring w Filter Media Bag $12.99 Time Remaining: 22d 16h 6m Buy It Now for only: $12.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 23m |
![]() New Replacement Filter Pads Use In Jebao CF 30 UV Bio Filter Blue Black Yellow $39.00 Time Remaining: 9d 11h 45m Buy It Now for only: $39.00 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 3d 13h 52m |
![]() 3 White 8X55 Filter Media Bags Bio Balls Carbon Aquarium Fish Koi Pond $4.79 Time Remaining: 29d 2h 52m Buy It Now for only: $4.79 |
![]() GET AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 403B $89.99 Time Remaining: 1d 16h 22m |
![]() 6pcs Media Filter Bags 8x 5 Bio Ball Bag w Zipper Ceramic Ring Bag Black White $7.47 Time Remaining: 19d 17h 56m Buy It Now for only: $7.47 |
![]() 2 Pcs 36mm Diameter Bio Bll Hydroponic Filters for Fish Tank $4.16 Time Remaining: 4h 58m |
![]() Bio Balls 15 Aquarium Pond Filter BULK 2000 pcs balls $120.00 Time Remaining: 16d 20h 2m Buy It Now for only: $120.00 |
![]() BIO FIBER BIOLOGICAL FILTER BLUE FRESH orSALT WATER $3.75 Time Remaining: 1d 7h 50m |
![]() Jebao 24 watt filter Pressurized Pond Filter bio Koi Fish UV backwash 6000 gal $186.88 Time Remaining: 9d 18h 7m Buy It Now for only: $186.88 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $64.99 Time Remaining: 4d 11h 22m |
![]() 3 16X13 Filter Media Bags Bio Balls Carbon for Aquarium Fish Koi Pond $9.88 Time Remaining: 4h 2m Buy It Now for only: $9.88 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $64.99 Time Remaining: 4d 11h 22m |
![]() MARINELAND PENGUIN BIO WHEEL MINI 100 FILTER NEW $22.50 Time Remaining: 6d 12h 7m Buy It Now for only: $22.50 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() 6000 Gallon Pressurized 24 Watts UV Bio Koi Fish Pond Filter w Easy Backwash $186.58 Time Remaining: 7d 12h 3m Buy It Now for only: $186.58 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 4d 11h 22m |
![]() Bio Balls 125 Aquarium Koi Pond Filter Bulk 2000 pcs $118.95 Time Remaining: 6d 10h 42m Buy It Now for only: $118.95 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 5d 7h 39m |
![]() 50PC Bio Ball with Sponge for Fish Tank Koi Pond Filter $15.59 Time Remaining: 2d 3h 10m Buy It Now for only: $15.59 |
![]() 1200pc Reusable Bulk Bio Balls 129 Wet Dry Filter Media Aquarium Pond Biofilter $69.95 Time Remaining: 1d 15h 9m Buy It Now for only: $76.95 |
![]() Air Driven Bio Sponge Corner Filter For 20 Gallons Fish Tank Fry Guppy Discu $12.99 Time Remaining: 27d 12h 13m Buy It Now for only: $12.99 |
![]() CHEAP AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 404B $106.99 Time Remaining: 2d 12h 50m |
![]() 10 ROLL PINKY AQUARIUM MEDIA WET DRY FILTERS PADS FOR KOI PONDS BONDED BIO BALL $7.95 Time Remaining: 25d 9h 48m Buy It Now for only: $7.95 |
![]() BIO FIBER BIOLOGICAL FILTER BLACK FRESH orSALT WATER $3.75 Time Remaining: 1d 7h 50m |
![]() Bio Sponge Filter Betta Fry Aquarium Fish Tank Single Sponge XY 2830 2821 $3.99 Time Remaining: 9d 16h 9m Buy It Now for only: $3.99 |
![]() CHEAP AQUARIUM FISH TANK BIO CHEMICAL FILTER + 9W UV HW 403B $89.99 Time Remaining: 2d 15h 32m |
![]() Eheim 2211 Classic External Filter w Bio Media $75.78 Time Remaining: 26d 13h 51m Buy It Now for only: $75.78 |
![]() Emperor 400 Bio wheel filter $1.00 (3 Bids) Time Remaining: 2d 9h 14m |
![]() Eheim 2213 116G Classic w Bio Media Canister Filter $84.85 Time Remaining: 2d 14h 6m Buy It Now for only: $84.85 |
![]() Tetra Pond Bio Active Pressure Filter BP1500 UV for Ponds up to 1500 Gallons $184.69 Time Remaining: 12h 19m |
![]() 8cm Black Plastic Bio Ball Filter 2 Pcs for Fish Tank $5.68 Time Remaining: 25d 7h 43m Buy It Now for only: $5.68 |
![]() 300pcs Reusable Bio Balls Aquarium Wet Dry Filter Media Pond Tank Biofilter Bulk $27.95 Time Remaining: 1d 15h Buy It Now for only: $31.95 |
![]() Aquarium Filter 500g Activated Carbon 30pcs Bio Ball Combo with Media Bag $11.99 Time Remaining: 21d 11h 24m Buy It Now for only: $11.99 |
![]() PENGUIN BIO Wheel 350 Filter $29.99 Time Remaining: 11h 23m Buy It Now for only: $34.99 |
![]() 100pcs 165 Bio Balls Aquarium Fish Pond Filter Media New Design FREE MEDIA BAG $19.99 Time Remaining: 10d 16h 13m Buy It Now for only: $19.99 |
![]() 1500gal Compact Backwash Pond Pressured Bio Filter w 13 Watts UV Clarifier 13W $65.99 Time Remaining: 6d 4h 50m |
![]() Tetra Bio Bag Large 8 Pack Whisper Filter Cartridge $10.99 Time Remaining: 20d 14h 7m Buy It Now for only: $10.99 |
![]() 20 Pcs Aquarium Tank Filter Black 18mm Biological Bio Balls $4.78 Time Remaining: 16h 10m |
![]() WHISPER BIO BAG FILTER CARTRIDGES 12 PACK LARGE NEW $17.99 Time Remaining: 26d 13h 18m Buy It Now for only: $17.99 |
![]() Bio Balls 150ct Biological Media For Aquarium Filters 1 Bio Balls No Box J2 $15.00 Time Remaining: 1d 15h 32m |
![]() Tetra Bio Bag Medium 12 Pack Whisper Filter Cartridge $10.99 Time Remaining: 27d 14h 5m Buy It Now for only: $10.99 |
![]() Marineland Penguin Power BIO WHEEL AQUARIUM Filter 50 to 70 Gallon 350 GPH $10.50 (2 Bids) Time Remaining: 2d 11h 27m |
![]() Pond Pressured Filter UV BIO FILTER 1500gal with spare 13w bulb Pressurized $79.99 Time Remaining: 26d 16h 58m Buy It Now for only: $79.99 |
![]() 1200pc Reusable Bulk Bio Balls 129 Wet Dry Filter Media Aquarium Pond Biofilter $69.95 Time Remaining: 3d 15h 8m Buy It Now for only: $76.95 |
![]() Marineland Emperor 400 400B Bio Wheel Filter Impeller PR 2121 $18.99 Time Remaining: 20d 8h 28m Buy It Now for only: $18.99 |
Bio Filter

Seven Most Asked Questions About UV Pond Filters
1. Is an ultraviolet light a filter? Yes, as far as the definition of filter goes. A filter is a device that removes unwanted material from liquid, gas, light or sound. Ultraviolet light removes harmful bacteria such a pathogens from the water. In the case of algae or planktonic spores, the UV light would act more like a transformer than a filter. The UV light transforms the live algae spores into dead algae spores; it does not filter them out.
2. Do I need an ultraviolet light in my pond? Some ponds need a UV light and some do not. If you have a small pond with a few guppies or mosquito fish, and it is 50% covered with hyacinth, water lettuce, or lilies, and it is being aerated by a fountain or waterfall, the answer is: No! If you have many fish, few plants, and a cheap bio-filter, yes, a UV light would help a great deal. Most large ponds of 20,000 gallons or more tend to be more stable biologically and nature's hydrogen cycle keeps everything in check.
3. Does the UV light kill beneficial bacteria? You probably ask that question because some liner pond guy told you, or you read it on his website, that it does. Well, it does not. Beneficial bacteria are not floating around with the algae spores and pathogens. Aerobic and anaerobic bacteria, nitrobacter, and other bacteria are busy working and doing what they do. They live on the surface of things in the pond and in the rotting debris on the bottom of the pond, breaking down nitrites into nitrates and nitrogen, and breaking down ammonium into ammonia gas. Ultraviolet light does, however, kill the microscopic animals such as the rotifers and daphnia which each planktonic algae ("pea soup" algae). However, the UV light is taking care of those too, anyway.
4. What size should I get? Ultraviolet lights are sized by watts and the number of watts you need is determined by the size pond you have. You should move the entire volume of the pond through the filter and UV light at least every three hours, and ideally every 1.5 hours. If you have a 1000-gallon pond, you need a 1,500 gallon per hour pump. So you would need to get a UV light that is rated to handle 1,500 gallons per hour passing through it.
5. Which is the best UV light to purchase? Do your homework. Do not just compare the prices of the unit. Compare warranties and replacement bulb prices. Find out the flow rates and the amount of time that water is exposed to the UV light. What is the lamp life rating? Is it U.L. listed? Is it made of UV resistant materials? Is the power supply easy to disconnect? Is the lamp easy to remove? Does it have a lamp lens wiper so it can be cleaned without taking the fixture apart? Is the transformer located on the cord and not on the UV light body? Does it come with unions for easy disconnection from the system for maintenance? Buy a model that has the clear inspection cap so you can see at a glance if the lamp is working.
6. Where do I install the UV light in the system? The UV light should be installed after the bio-filter. This way, you are running filtered water through the fixture and it will stay clean longer.
7. How long should a bulb last? If you keep it clean (once a week), it should last for 18 months. This is all the more reason you should be willing to pay the extra $10 to $15 for the wiper model, because the labor would be too intensive if you had to take the fixture apart, remove the quartz lens, clean it, and then reinstall it every week. If you drop it or twist the cap on wrong and break it, it costs $60 to $80 for a new quartz lens. With the wiper model you simply pull a plunger several times and internal wiper acts as a squeegee to clean off the lens. If you do not clean the lens regularly, it will only last for a year, not 18 months. You can actually get two years out of your UV light if you turn it off during the winter months when the water is cold and the algae are dormant.
In conclusion I would like to suggest that you can never buy a UV light that is too big, but you can certainly purchase one that is too small!
About the Author
Douglas C. Hoover; CEO of Aquamedia Corp, master Waterfall Builder, freelance writer and author designer, architect, inventor, engineer, writer, author and builder of over 1,900 waterfall and ponds in California or the past 26 years. Inventor and manufacturer of the "AquaFill" T.M., electronic float control system for ponds, pools, fountains and hot tubs. Read more: http://www.aquafill.com.
Can I use building ( for cement ) or road constuction sand to make a sand bio water filter.?
I am busy making my boat as self sufficient as possible.
So I wonder what sand I need to purify rain water.
I found the blueprints, read the test results ( chemical analysis ).
It should work and be safe, but I worry about the right grain size
for the sand.
Builder's sand contains contaminants that you would not want in your purified water. I'm guessing road construction sand is similar. How about silver sand or something similar? See what your local garden center has got.
Biofilter - Stage 48.wmv




































































































