Like you our FLorida summers are hot and the water levels drop quickly. We installed Hudson Fill Valves on both of our ponds. They work great and are easy to install. We just ran PVC from the faucet to the pond - connect the fill valve to the PVC at pond edge - place the valve where you want your water level to be and that's it. You will need to just purchase a few PVC fittings and pipe and it should be easy for you to do. We bought our valves online. Just google in Hudson Fill Valves and lots of places sell them. Good luck

I've always wondered what people with auto refill valves (& that live in areas with treated water) do about adding de-chlorinators? How does that work?

Is there something automatic for that (mixing)?

Mine is well water, so it isn't an issue.

Do you know if pool supply stores might sell the Hudson Fill Valve? I would like to get this installed asap, while the trenches are open.

Thanks.

We have well water also so I have never checked on anything other than what I needed. I checked at pinch a penny and they didn't have any of the auto fill valves but it should only take a few days ordering online. You would definitely want to do this before you fill in your trench.

When you install an automatic refill valve do you need a back flow valve?

Are there regulations for this sort of thing?

Knuttle, can't answer your question confidently, except to say that I'm sure there are regulations on it if there was any way possible for the water to back siphon into the public water supply. Lucky for me, my well isn't on public water supply, or even used for my residence! Just to water plants and fill the pond.

I ordered a Hudson Fill Valve. I'm sure that once it comes in I can figure out how to install it - but live out of town and would like to have the supplies on hand before the weekend. What kind of connections would I need to install into a 3/4" water line? How to position it in the pond to make sure water is at the level I want it? Is there any site with step by step instructions, with pictures, on how to install? I googled but couldn't find anything that wasn't way generic.

You may want to check into an electronic fill system that use no moving parts. Float valves are notorious for failing and if you have fish or expensive pumps they may e susceptable to damage. Floats are known for failing because they clog or stick in the off or on positions. Electronic systems are more dependable, more accurate, easier to adjust water level on, and are easier to hide. They also can be plumbed to a separate area of the pond than where the sensor is at, which can be really handy when installing the units. Google electonic pond fill and check out the various types available.

I use this type of horse trough filler and then supply that from a regular automatic sprinkler valve. Should the float valve get stuck, and they do, it will still be limited to the amount of water by the sprinkler valve.

I know in forums the common wisdom is to always treat city water. But it is possible to add chlorinated water to a pond without treatment if you have a good understanding of how. Andy Moo provides a good explanation at 7:28 into his video.

So for an auto fill you want place it someplace the fish can't get directly at it.

Get a automatic timer that's used for watering your lawn.
I've used mine for 8 years, I just set the timer for 15 mins. every two days. Set a 1/2" line from the timer to the pond ( bury if possible )so it hangs above the water roughly 1-2 inches. Hide it of course so you can tell if it's on or not. My timer runs landscape plants and the pond.

hwarrick, yes, that's the type of automatic sprinkler valve I was referring to.

Yes it works great and it's a no brainer.