Anyone who keeps invertebrates like Caridina shrimp knows and appreciates the advantages of active soil: It reliably lowers the pH value, stabilizes carbonate hardness, and provides plants with optimal nutrients. But soil has an expiration date – after a few months, its buffering capacities are exhausted. Previously, this meant emptying the entire aquarium, destroying the painstakingly built hardscape, and completely replacing the substrate. With the innovative SP Soil Background Slim, this aquascaping nightmare is now a thing of the past!

Your advantages at a glance:

• Smart, extra slim version: This model was specially developed for compact nano aquariums, 20-liter cubes, and the popular Kallax aquariums. Thanks to its ultra-narrow design, the box takes up hardly any swimming space and elegantly disappears visually at the back wall.
• Hardscape remains untouched: The background is simply hung in the tank and filled with soil. If the substrate is used up after some time, you simply take out the box, empty it, fill in fresh soil – done! No stress for plants, layout, or animals.
• Optimal flow for pH reduction: The precisely placed filter slits have a spacing of exactly 1.5 mm. They guarantee constant, highly effective water circulation through the soil bed, thereby perfectly utilizing the water-optimizing properties of the soil.
• Shrimp-safe slits: The 1.5 mm fine slits safely retain most commercially available soil types within the box. (Note: The use of very fine powder soil is not recommended).

⚠️ Important expert tip for the safety of your animals:

To avoid a sudden pH drop or an abrupt, radical change in familiar water values, spent soil should never be replaced completely all at once. We strongly recommend gradually filling the box with fresh soil over several weeks during the change. This way, the biological environment for your shrimp remains absolutely stable.

Product details & recommendation:

• 1x SP Soil Background (Slim version) including integrated holder
• Optimized for: Aquariums up to a maximum of 20 liters volume (e.g., 20L cubes, Kallax scapes)
• Material: High-quality, durable, and absolutely water-neutral special plastic