How To Fill Heavy Bag Base With Sand. With proper care, there shouldn't expect to be any cracks in it for quite a while. The good news is there are many materials you can use to fill your planter.
The most popular options are rocks, packing peanuts, and old 2 litre bottles. Take the bag and lift it directly onto the punching bag stand until it sits flush against the lip of the base. I fill mine with water.
Fill it with water and it’s liable.
The bag weighs about 270 pounds when the base is filled (you can use sand or water). These can add or reduce the weight of your planter. If you are using cloth, add the cloth in even layers, weighing it down every couple of layers. Place foam mats beneath the stand to keep it from sliding.