Celcon Block Fish Ponds
Are Celcon Blocks Sufficient For Fish Ponds?
Whilst Celcon blocks would not be the obvious choice, they are in fact a material that is well worth considering when constructing a fish pond. Most people's first thoughts would be to use bricks or breeze blocks. Whilst a celcon blocks appearance is similar to that of a breeze block, there is a difference that should be noted. Celcon blocks do not soak up water in the same way that a breeze block does. They are also incredibly strong, and can substain strength under a lot of a pressure.
I have build ponds using celcon blocks and have never been dissapointed with the outcome. I can honestly also say that after using celcon to build with, I would never use another material when building a pond.
Easy to work with
When building your fish pond you will expect to make lots of cuts, and this can be a bit of a slightly lond winded process and a real problem when using solid concrete blocks as an angle grinder would be required. However with celcon blocks there is no problem whatsoever. It is a simple case of just cutting the block with a saw. In fact you will find that the saw goes through the blocks much easier than it does with common woods. The blocks themselves are much lighter than a concrete block, but not as light as the common breeze block.
To stick the blocks together all you need is a good mix of cement and sand - Mortar.I would personally recommend a slightly wetter mix than usually (but just slightly), for best results. I also found that keeping the blocks wet helps for a better stick. The best mix I have found is about 4 sands to 1 cement.
All in all, celcon blocks are extremely easy to work with and they will do a good job holding your pond together, as long as the job is done well. Don't forget to lay sufficient footings, which should be around 1ft deep, as you do not want the walls moving. When laying your footing make sure that you use a stronger mix, of around 2 sands to 1 cement. You should also take care when tieing in your corners of the pond, because they will take a lot of the water pressure. It is always a good idea to give them some extra strength by using steel corner brackets and applying them to the corners.
Drilling into Celcon blocks is extremely easy. I have personally found that drilling a screw straight in to the block with no raw plug works best.