This is a primary part of the filter of a properly maintained pond. This is typically referred to as a leaf skimmer. A leaf skimmer should be emptied at least once a day, or once every two days, depending on the leaf fall, that is going into the pond. For this skimmer, you'll just go right ahead and remove the leaf basket, by unhitching it, and pulling it out, and taking the leaf litter, and just throwing it away. Once it's been thrown away, you'll go right ahead, and relocate the slots that it needs to be placed, re-hatch it, and do the proper maintenance of the rest of the pond. Proper maintenance of the pond is going to consist of catching leaves with a leaf net, and also, what is typically referred to as a leaf vacuum. All these materials are able to be bought at a pool supply company, or at your local Home Depot, or Lowe's. This is what a leaf vacuuming is. A leaf vacuum consists of this attachment, what you'll attach to your hose, and a leaf net. Typically, the leaf nets have a cord around it, to go right ahead and tighten it. However, we highly recommend that you do not use this cord. It's best if you go right ahead, and actually utilize a bungee cord around this, that way you can hold fast the net, with no problems. When this net fills up with a lot of leaves, unfortunately, it will unhitch quite easily, at which point, you're going to have to get the net from the bottom of the pond. If you put it on with a bungee cord however, you'll notice that it's very hard to remove. Now, the net is secure, and will not come off easily. You'll also need a leaf pull, or leaf net pull, and a leaf net. You can either use a regular leaf net such as this, which is a wide mouth, and the leaf pull you can get in various lengths and sizes. This is a typical length for maintaining a pool or a pond, and basically what we're doing, is going through the surface of the water, and getting debris out. When you're using this sort of a net, you want to skim the water. You do not want to go completely under the water, unless absolutely necessary, just skim the water, and then pull back like this. For leaves that are at the bottom of the pond, that is why we use a leaf vacuum. The leaf vacuum goes right ahead, and attaches directly to the leaf pull, just like a leaf net does. Then, we'll go right ahead, and attach the garden hose, and then what you will want to do, is go right ahead, put the leaf vacuum into the water, fully submerged. Once it's submerged, you can go right ahead, and turn on the water. We'll go right ahead and do that right now. This we'll go right ahead, and we'll vacuum up the leaves into the leaf net itself. If you do this on a regular basis, you will not have any discoloration of the water. In this instance, this pond has had a lot of leaf litter gone down into the pond, which goes right ahead, and leeches out the tannins of the dead leaves. The tannins will go right ahead, and discolor the water, to like a tea like, brown stain. When you want to remove the leaf vacuum, go right ahead, turn it upside down, inside the pond, and go and turn off the water, and now you have all this leaf litter, that you can go right ahead, and throw away in the garbage can, or better yet, just dump it out, and put it into your plants, that you have outside. This works as a very good mulch.