Our aquatic soil mix comes in 5L bags. It is what we are using in a number of our tanks in store. Great for planted tanks, from low to high tech, etc. It is great value for money.
How to use: There are a few different ways to use this product. You can put this soil in mesh bags such as filter media bags, and lay these bags beneath your substrate. Otherwise, you can just put a layer of this soil on the bottom of the tank. We then recommend that you cap this soil with another substrate. You can use anything, however, we have had the best results with finer substrates such as white silica sand or our charcoal grit. You only need a cm or 2 as a minimum depth for capping. There is no maximum depth for the capping layer within reason. They plant your plants into the substrate/soil. The roots of the plants will naturally grow into the soil.