My Latest Project


The Skippy Filter is in the top right hand side of the pond. The one with all of the Iris growing out of it.

I have several Skippy Filters located around the different ponds in an attempt to keep the water clean. Fish are notorious for making the water dirty, they eat and therefore they poop. Add to that the fact that they are always poking around on the bottom of the pond and stirring up the dirt plus the natural phenomenon called algae and rotting leaves from the overhanging trees and at times, the ponds are so dirty that you can’t see anything.

Ponders have learned several different ways to help combat these natural processes most of which are of a mechanical nature involving pumps and filters. Of course, this being America, land of opportunity, there are manufacturers out there willing to sell you the latest and greatest in the form of expensive equipment to help the Pond Owners combat any of the problems that they may have.

I use a combination of manufactured items which includes the pumps and skimmer boxes and I do have one bio filter that I described in a previous blog and several homemade ones that emulate the commercial model. One of these is a 100 gallon rubber farm trough purchased from our local Tractor Supply, and is on the 6000 gallon pond and has been there since I built the pond around ten years ago. They are known as Skippy Filters and I had 3 large ones on different ponds plus 3 of the smaller size. Incidentally, I have never cleaned this particular filter in all of that time.

This one started leaking and as had happened on a previous occasion on a different Skippy on the 5000 gallon pond, the internal weight of the water caused the hard rubber container to crack. This was probably caused by a shifting of the concrete blocks that I used for the tubs to sit on as both tubs have split in the same place, close to where the drain valve is located. I was able to repair the first one and it has been back in operation for a couple of years and hopefully, so far is trouble free.

Showing the dirt on the top after the vegetation was cut back

I turned off the flow to the filter in the 6000 gallon pond and let it sit for a week or so before attempting a repair. This was to allow it to dry out which would make it easier to tear apart. After I deemed it had sat long enough, I bit the bullet, and making a big effort to get up early to beat the heat, proceeded to tear into the vegetation growing out of the thing. I had planted the Iris and Lizards Ear as the roots all help with the filtration but as they had totally taken over the unit, it took a while to get it all out. Interestingly enough, the dirt from the filtered water was all pretty much collected on the top of the filter material in a solid layer several inches thick showing that the unit was more than doing it’s job. The actual filter material is comprised of the pads used by floor buffers, in my case new ones cut up into smaller pieces. It’s pretty much the same as the regular filter material which could be used instead. I sometimes use Lava Rock either in small mesh bags or loose. It also works well but is harder to shovel out and clean.

Showing the grid which sits on blocks creating a chamber below.

The filter unit has a chamber space under the filters of about nine inches deep and the inlet pipe is plumbed to empty its contents into this space. I placed a piece of fluorescent light grid on concrete bricks to make this chamber but commercially manufactured grid is available and is stronger.

Showing one of the cracks in the unit.

I finished cleaning out the entire unit and was surprised just how clean the bottom half of the filter material was, more evidence that the unit was working as planned.

With the entire unit free, I pulled it off to an area so that I could work on it and hosed the whole thing out to clean it of any surplus material and then let it dry in the hot Texas sun, which didn’t take too long. I discovered a long crack of about 12 or so inches that had opened up right where the outlet hole is on this tank. This was exactly the same as what happened to the other tank so I had high hopes that I could repair it as I had managed to repair the first one.

By now, it was 98 degrees and way too hot to do any more outside work. I took the time to go to my local Lowe’s so that I could purchase the material I needed to make the repair. This comprised of a small spray can of Flexseal which is a rubberized material that will get right into the cracks and then Flextape which is also rubberized, to cover the entire repair.

When I returned and even though it was by now 100 degrees, I bit the bullet and took time to wire brush and clean the area before applying the contents of the spray can of Flexseal. Deeming that it needed to dry, left it for another go at it the next day which saw me up bright and early again busy applying the Flextape over the affected areas. It was not a straightforward job as there were many changing shapes and contours so I had to cut the tape in strips to cover them all. To test it, I put enough water back into the tank just to cover the affected areas and it immediately began to leak which left me more than a little upset. The air turned blue as I vented my frustration using words that I didn’t know existed. The dogs immediately bolted indoors.

I emptied the remaining water and left the unit to dry and spent that time with yet another trip to Lowe’s this time for a larger can of the spray as I had used up the small one on the initial repair. Luckily for me, Lowe’s is only 4 miles up Hwy 71, just a short drive and I am always listening to an Audiobook as I drive and if the timing is right (late afternoon), a stop at Starbucks. When I returned, I sprayed a large amount onto the cracks in the bottom of the unit and then waited (indoors) for that to dry before turning the unit over to respray the inside. With that complete, I let the entire thing dry out overnight before testing it with water again.

Next day, I was out bright and early eager to check the repair to see if it held up. Needless to say, it didn’t although the water flow has been reduced to just a few drops. So, I did more work on the unit and resprayed with the Flexseal. While I was working on it and upon further inspection, I discovered that the tub has several other cracks in it that I had not noticed before. I decided that as I am unable to fix the original leaks, that tub will be relegated to a flower planter.

All is not lost though as among my many ponding treasures picked up over the years, I have a filter unit that I got from Emerald Garden Water Gardens and Nursery when they were going out of the Pond business and transforming to Leaf Landscape Supply. I spent a couple of days preparing and replumbing it so that I can use it instead. It is not as big as the unit that it is replacing but as the secret is in keeping a constant flow of water moving through the filter material, then it will work just fine. It has a metal base which is quite heavy but the unit itself is easy enough to handle.

The new Skippy filter
The two Skippy’s with the new one on the left. Notice the Cannas growing in the Skippy on the right.

Incidentally, I intermixed working on this filter unit with another project. I already had a spare 30 gallon Skippy from the 350 gallon pond that I closed down earlier this year so I added it to the 2500 gallon pond that I just trimmed back as that water is also very dirty. It already has one 30 gallon Skippy and the one I added is the same size. This was an easy job and I had it in place and working within the hour. Now, all we got to do is wait for it to do its work. These small Skippies are not permanent unless I want them to be and so are handy to help clean up a dirty pond.

The Savio Filter unit that I recently installed on the Goldfish pond is doing a wonderful job. I can actually see the fish and it is cleaning up the water at a rapid pace.

The bottom feed into the unit which also included reused material.
The outlet pipes. Note one has a 45 degree bend and the other a 90 degree. Only because they were available in my used material collection, no other reason.

The next day, I decided that I would make a big effort to re-plumb the “new” unit. I wanted to try to use some of the bits and pieces of pre-plumbed pipe, stuff that has a valve or an elbow and such that I have accumulated over the years and was able to incorporate a couple in the project. I still had to make a couple of trips to Lowe’s for last minute items. I eventually completed the plumbing including the outlet pipes which were both of recycled goodies hence the difference in shape with one elbow a 45 degree and the other a 90.

The filter material. They are cut up pieces of circular floor buffer pads.

Then came the fun part of reinstalling the filter material and I carefully placed it piece by piece to get a nice level finish. I still need to cut a couple of pieces of filter that will cover the entire unit and sit on top of the other filter material to hold them in place. All that remained to do was to turn on the water at the pump installed at the far end of the pond and hope that nothing leaks. It didn’t and before long, there was a nice steady flow of water flowing through the filter and back into the pond. After tidying up the dirt around the unit and clearing everything away, all I have to do now is wait for the plants to re-grow up and around the unit to hide it from sight. That probably will not happen this year with the 100 degree heat but maybe in the Fall, there may be some growth. Definitely in the Spring.

The completed unit.

Another successful project. Let’s hope that it lasts long enough until either I am too old to care or ten years like the original Skippy, whichever comes first…Wait a minute, in ten years I will be 93 and too old to care anyway.

Written 8/18/2019

My Latest Project.


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The Skippy Filter on the Goldfish Pond.

I have three large “Skippy” filters on three different ponds and a couple of smaller ones on the goldfish ponds. They are simple to construct and do a very good job of helping to clean the water. Basically, water is pumped into the tank through a system that feeds through the bottom allowing the water to rise up through the filter material and flows out through a 4 inch pipe back into the pond either directly or through a waterfall.. I use 1 1/2 inch pipe to  pump the water in and in my case, a 1200 gph pump located in the skimmer box.

Basically, mine are built using a 100 gallon Rubbermaid tank that I buy from the Tractor Supply store, one of my most favorite places to visit. I have mentioned before that in real life, I missed out and should have been something related to the land like a Farmer or Wildlife Warden hence my liking for Tractor Supply. I guess I am compensating in a different way. Anyway, Tractor Supply carries these Rubbermaid tanks in different sizes and I have found that the 100 gallon size is just right for my purposes. I also have three of the 80 gallon size that I use to keep pond plants in as I am getting them ready to put into the ponds or to over winter them.

The tank on the 5000 gallon pond developed a leak very close to the drain plug that is built into the tank. It was only the very faintest of cracks but enough that it was constantly dripping. Over time, this would amount to a lot of wasted water (and money) so I decided that I would do a repair job on it.

I shut it down and drained the water back into the pond  and disconnected the plumbing. I then emptied the filter material which in this case was Lava Rock loosely stacked inside of the tank.I was surprised how clean the rock was as I expected it to be pretty muddy considering that the system had been in place for at least 10 years. Turns out that most of the mud was in the bottom water chamber built into the system. I finished cleaning out the muck and put it on the garden as it is basically fish poop and full of good garden nutrients. After washing out the tank, I turned my attention to finding the leak from the inside as I already knew where it was generally located from the dripping water on the outside.

I found what I thought was the crack. It was about 3 inches long and in a difficult place to repair. Being a Rubbermaid tank and with the basic material rubber, I opted for a tire repair kit to see if it would seal the leak. I have a small electric hand sander which I used to prepare the area, cleaning and roughing up the rubber tank material and after cutting a patch from a small piece of pond liner (another rubber material), I carefully applied the adhesive and after waiting the appropriate time for the glue to dry, applied the patch over the crack.

The repair was as good as I could get it and I went about the task of putting the filter back together. I like to build a chamber where the inlet pipes are located to give the water a chance to flow freely before it rises up into the filter material. The old material that I had used for this chamber (a wire shelf cut to size) was not in very good shape after many years under water so I decided that I would replace it with better and stronger stuff. This meant a trip to Cedar park, around 30 miles one way, to visit one of the Pond Society sponsors, Hill Country Water Gardens, to purchase the proper material. I needed a 2 by 4 piece of plastic grating and a 4 by 4 piece of plastic mesh to put on top of the grating to stop smaller pieces of the lava rock from filling the chamber below. Even though it is a long way to go, I really like visiting this place as it has so much cool stuff. I should mention that prior to making the trip, I put enough water into the tank to cover the repair to test the leak and it seemed to be holding up.

The next day, I carefully cut the grate to size followed by a piece of mesh also cut to size and after replacing the fill pipe from the original setup, installed the grate and mesh into the tank on strategically placed bricks for support after making sure that the tank was level and well supported although I had not moved if from its original place. I opted to buy some mesh Laundry bags from a couple of the local stores and to load them with the lava material as it it had been a real bitch to dig out this time around. As I filled the bags, I placed them onto the grating inside the tank until I had enough for my purpose. I used loose lava rock to fill in any holes between the bags. After reconnecting the original plumbing, I turned the pump back on to see if everything was working  as it should and that it was not leaking . It appeared to be OK so I left it running overnight.

The next day, to my dismay, I discovered that there was a second leak that had not been visible the first time around. I figured that probably loading the tank with the lava rock and with its additional weight, had distorted the tank enough for the second leak to show up. I left it for a couple of days but it was only getting worse and was really bothering me to waste that water, even small drops at a time. I decided that I would do the job over this time with a new tank but that is a different story. You could say, part two…