REMEMBER THIS: WATER AND ELECTRICITY DO NOT MIX, SO SAFETY IS THE ORDER OF THE DAY. If you are the least bit uncomfortable working with electrical wiring and devices, then I strongly recommend hiring a qualified electrician.
Just one quick story in that regard. Not long after we had our pond up and running my wife decided she was going to put those little twinkle lights around the perimeter. I didn’t feel that was a very good idea and said so, but of course I didn’t know what I was talking about, so the twinkle lights went into place. One night she discovered they weren’t on so she walked out to the pond to find out why, in her bare feet no less. Her guardian angel was with her that night because as she was checking the lights, part of the string went into the water. Natural reaction. She grabbed them and got the shock of her life. Under those conditions she might have been killed, but most fortunately she is still with me. The only thing killed that night was the idea of twinkle lights around the pond.
Submersible pumps and submersible lights are specially constructed to be used under water. As far as above ground lighting around the pond goes, the Malibu type lights that run off a twelve volt transformer work very well. Remember that everything that will be hooked up to electricity must go through a GFCI (Ground Fault Circuit Interrupter) outlet or breaker. No exceptions. Below are the different components.
For ease of information I’m going to tell you how I set up the equipment in our pond, and why I did it the way I did.
Water Filter, (on the left). It is a submersible type that sits on the bottom of the pond and connects to a piece of 3⁄4” flexible tubing that runs from the filter to the intake side of your UV Light. Then another piece of 3⁄4 flex tubing runs from the output side of the UV Light to the intake nozzle of your water pump. Finally, the output side of your water pump either allows the output to flow back into the pond, or if you have a waterfall or fountain, you can attach one more piece of 3⁄4 flex tubing to the pumps outlet nozzle and use that to supply the waterfall or fountain.
This is a pretty straightforward hookup. You may find it a bit different depending on your choice of water filter. Some filters are designed to be used outside the pond, and I used one of those when we first put our pond in. It gave us a lot of trouble, but it turned out to be a blessing in disguise because it got me thinking that I could make a better filter. So I did, and used it for many years, with no trouble I might add. (Side note: I use to make and sell my own homemade pond filter, however, I don’t have a lot of time do make them any longer).
UV Lights, (on the right). Come in submersible and above ground designs. I would recommend the submersible type again, mainly because that’s the type we have always used, and other than a couple of bulb replacements, it has never been any trouble.
A note on connecting tubing. It is 3⁄4 flexible as stated previously, and it comes in clear or black. Your tubing will be cut to different lengths as you use it and I’ll provide some examples here. You should cut the first piece (from the water filter to the UV Light) long enough so that you will be able to pull the water filter up out of the pond for cleaning without disturbing the location of the UV Light. This length will depend somewhat on the depth of your pond and where on the edge of the pond you can set the filter down for cleaning. Of course the tubing from the UV Light to the pump only needs to be a foot or two because once those two items are positioned there will be little need to move them. The length of the last piece of tube depends on whether or not you have a waterfall or fountain. If you don’t, you won’t need any at all. If you’re feeding a waterfall, then run whatever length you need from the outlet side of the pump to wherever you begin to feed the waterfall.
Water Pump, (on the left). The workhorse of this whole operation since it draws water from the pond, through the filter, through the UV Light, and then through the pump itself. So as you can see, the larger the pump, the faster the flow. You may need to re-read this paragraph a couple times, but this is the proper way to hook this stuff up.
It’s best to purchase water pump, water filter, and UV Light before you buy any tubing so you’re sure what size fittings come with them. Most of the fittings that come with these items are the 3⁄4” barbed type and they make for a good tight connection.
Next, we’ll take a look at the perimeter of your pond.