TROPICA Substrate – 1L
A concentrate, used under gravel when planning the aquarium.
Ensures healthy and long-term growth.
Is neutral and does not affect the KH or pH value of the water.
The substrate absorbs nutrients and makes them available for plant roots.
How to use the product
Plant Growth Substrate is laid in a 1 cm thick layer on the bottom of the aquarium, when the aquarium is built. The table below provides recommended Plant Growth Substrate amounts for a number of standard aquarium sizes.
| Aquarium Size (L) | Recommended Amount (ml) |
|---|---|
| 10 | 10 |
| 20 | 20 |
| 30 | 30 |
| 50 | 50 |
FAQ
Can this substrate be used directly without adding gravel?
Yes, it can be used directly on the aquarium bottom. However, it is commonly used under a layer of gravel for better stability and aesthetics.
Does this substrate change the pH or KH levels of the water?
No, the substrate is neutral and does not affect the KH or pH value of the water.
How thick should the substrate layer be?
The substrate should be laid in a 1 cm thick layer on the bottom of the aquarium.

Nathan Hamilton –
I used this substrate in my 20L tank and noticed faster plant growth within a week. The plants stayed healthy even after several months. No changes in water pH or KH, which was a big relief for my beginner setup.
Faith Forsyth –
Works well under gravel. Plants root properly and grow steadily. I didn’t have to adjust water parameters, which made maintenance easier.
Dan Dowd –
The substrate is easy to apply and stays stable. My aquarium plants have grown strong and vibrant since I started using it. No issues with water chemistry.