So, you are ready to finish water proofing the basin. With all the filtration and the waterfall in place, then you want to lay out the liner for the basin to hold the water for your pond. The most important part of laying in the basin is making sure you have removed any rocks or roots that are protruding into the basin area. These could really cause problems later and make you want to cuss or something. That would not be good. After the dirt is cleared of debris, you want to lay out an underlayment material. I have used old carpet pieces, but they also make a specific product you can buy that is designed for the pond. All the underlayment does is prevent any foreign object from potentially puncturing the liner. When the dirt settles, you never know what might appear that you were not expecting.
Ok, so now time for the liner. This step is worth taking some time on as it is the most important part of a pond. It needs to be attached onto the skimmer box and then worked real nice around the bottom and the sides of the basin. If you can prevent ripples, you will have less places for algae to build up, but keep in mind you can’t prevent all ripples.
After the basin liner is in, you can let the waterfall liner rest on top of the basin liner. Always making sure that the liner covers plenty more area than water will be touching. You never want the water to be close to the edge of the liner, or it could overflow and then you will be filling your pond everyday with water. That is not fun for the ol’ water bill.
The next step is to make a rock puzzle around the edge of the liner. The goal is to cover every square inch of liner so it cannot be seen. You are also looking for stability since your kids or grandkids will be walking on them to feed the fish.
Tomorrow we will finish up with installing the pump and testing the system.