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I have a 800 gal Koa pond that is now getting a alga problem. I have a filter with a uv light and treat the pond with algecides, but want to get in the pond and clean out the string alge, also would like to know the best prducts to help prevent future alge growth.

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Hi, you can use Polymer (polyquat) and Silver Algaecides because it is highly effective in the treatment of resistant algae problems..

Take care

Posted on May 08, 2010

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How do i go about replacing the uv light


obtain proper replacement bulb
shut down entire filter for a moment before unscrewing the top locking ring off Uv filter (left turn) lift top off set asside
using a soft clean rag retract uv tube from its cylinder holder inside , remove power connector from tube end (you should have already removed all power from converter box) with extremely clean rag handle new tube ( allow no forign material to touch outside of tube ) reinsert power connector onto new tube (same way it came off old one) then reinsert tube into holder sleeve , route power cord to proper places away from lid , replace lid and install lock ring back with enough force to ensure a leak proof seal , re start pump ck for leaks if none found then restart power converter for Uv filter

Jun 05, 2015 | Sunterra 300207 Pond UV BioFilter 2000...

2 Answers

My pond water is very green


Hi toffeegirl1
The green color of your water is due to a high concentration of Algae.
If you have no fish in your pond, you can use some bleach (depending on the size of your pond, use about 2 caps full per 30 gallons) to kill the algae.
If you have fish in your pond, DO NOT USE BLEACH as it will kill your fish.
Please take time to rate me
Bud

Oct 08, 2012 | Garden

1 Answer

There was no manual when I purchased this item, is it submersible or does it sit outside the pond?


According to Pondmaster, location doesn't matter as much as the flow going through it. You will have to plumb it where it is convenient for you, and allow for bypass valves. From their website:
How much water should I flow over my UV?
Just enough and not too much. Easy, right? On the contrary, this is a very tough question. To clarify, or control green water, the recommended dosage is 15 microwatts per second per cubic centimeter of water at a frequency of UVC of 265 nanometers. Whew! What this boils down to is a formula for the right amount of sunburn. You don't want to incinerate the cells, that would take too much energy, you don't even need to kill them, just to stop them from reproducing, so there is a maximum recommended flow rate that ensures that the cells passing through the light will get enough of a 'tan' to make them sterile (hence the term UV Sterilizer). Too fast a flow means not enough exposure and hence, no effect on the cells. Our UV's are rated, therefore, by the maximum flow that will still provide for enough exposure to the light to be effective. It follows that you can make a light more effective by slowing the flow, thus increasing exposure time, so we often recommend a Valved Bypass [insert link to Valved Bypass instructions] to selectively flow only part of the water going to the falls through the UV, to maximize exposure rates. However, and this is the tricky part, if the flow is too slow and not enough pondwater is being exposed quickly enough, the algae can reproduce before they make it into the UV. This sometimes happens in larger ponds with lots of nutrients and sunlight, and generally requires multiple UV units for effective control. The point is, do not exceed the maximum flow rates recommended or your UV just won't work, and decreasing the flow will typically make the UV work better.

Aug 13, 2011 | Pondmaster UV Clarifer

1 Answer

Can you clean the clear tube that seperates the UV bulb from the water in a Tetra Green 2 UV?


A test tube brush or a small bottle brush will fit and not damage anything. Alternatively as long as it is not used for saltwater soak in a bucket of 5 gallons water and a 1/2 cup of bleach will kill and separate any algae. Just rinse thoroughly to flush out any leftovers and to clear the unit.

Apr 10, 2011 | Tetra Green Free Uv - 2 Clarifier - 18...

1 Answer

Why does my heat pump smell strange i dont remember it doing that last year? have run it for ages the sickly smell wont go


Hi,
You probably have mold, algae, and mildew growing on the indoor coil...This can be treated by a UV Light installed at the coil or by spraying the coil with a coil cleaner with a algae inhibitor in it...

heatman101

Apr 17, 2010 | Heating & Cooling

2 Answers

Missing a owners manual for a Garden Treasures biological filter


I have the manual, and I can scan it as PDF, but dunno how to send it to you.  I guess this site won't want us to post email. The Canister is very easy to use, just DO NOT remove the metal tension seal ring.  To prep it, you first have to remove the 4+1 top screws; remove the top part (be careful do not pry the clear plastic cover off, that should stay intact); plug the UV in its socket and carefully insert the UV light into the center chamber; reassemble the top with 4+1 screws; attach the two cone-shape nozzles to the "In" and "Out" of the canister, if you use 3/8" tubing for the pump, then no need to cut the nozzles, if you use 1/2" tubing, then cut the 3/8" section off, likewise for the 3/4" tubing, make sure the In and Out should have the same flow to balance the pressure inside the canister; turn the handle to "Work" plug the tube from the pump into "In" and connect the "Out" with the tube return to the pond or water fall; Turn on the water pump and plug in the UV light (use GFCI), wait 30 secs, and you should see the flow from the return tubing. Note:  use a 650+ gph bump at least; DO NOT submerge the canister in the water; put the canister on an even surface; cover the canister against rain and moisture.  My 800-gallon "green" pond clears up in 7-days. Good luck!
M

Apr 12, 2009 | Garden

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