Pondmaster 02940 40-Watt Ultra Violet Light Pond Water Clarifier Review

Average Reviews:

(More customer reviews)I have medium sized decorative pond that gets harsh western sun from about noon until sunset.Ironically, the algae got worse in winter.Visibility in the pond was down to about 1 inch.It was positively disgusting and it stank.

2 week after putting the Pondmaster UV filter into the pond, the water was clear as crystal.

However, as the manufacturer indicates, "filter" isn't the proper terminology.It's a sterilizer.It doesn't eliminate the need for a normal bio filter.This kills the algae and other parasites so the bio filter can remove them from the water.If you have a particularly green pond (as I did) clear the filter pads weekly until you've regained control over the algae.

Again, note that the UV system addresses free algae - not the string algae that grows on the sides.It's basic logic - if the algae is stuck to the side, then it can't pass through the steriliser to be killed.

Change your filter pads regularly until you've gotten past the 2-3 week period when you're waiting for the pea soup to vanish.All that dead algae needs to be removed.Make sure you get any old leaves out too - that will speed things up.

If you don't see results, make sure you have the right wattage, and also adjust the pump to ensure the water isn't moving to fast.Algae cells need about 1-2 full seconds exposure to the lamp to break the cell membrane and kill them.

Bottom line - it does PRECISELY what it says.

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Product Description:
Submersible 40 watt Ultraviolet (UV) Light Pond Water Clarifier for use with pumps up to 3000 GPH, in ponds up to 6000 gallons. Kills suspended algae with UV light. Water can be pumped through the UV light and then into a biological filter (sold separately) where debris and dead algae can be trapped and decomposed.When installed correctly, UV lights are very effective at eliminating green water pond problems. This UV light has a 3/4" barbed intake and outlet for flexible tubing and is equipped with an 18 ft power cord. The soft, blue halo light rings show that the unit is working. The vortex flow design increases the exposure time of the water with the ultraviolet light and the slim diameter brings more of the water closer to the intense UV rays, making the process more efficient.These clarifiers can be installed submersed in the pond, or outside the pond.UL listed.

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