Tropic Bat Mix 50 Litres

Tropic Bat Mix 50L – Bat Guano Enriched Pre-Fertilised Soil

Tropic Bat Mix 50L is a rich, ready-to-use bat guano soil designed for growers who want long-lasting nutrition built directly into the growing medium.

The mix combines 45% Baltic peat, 45% German peat and 10% perlite with Original Bat Guano Pro to create a nutrient-rich, well-aerated growing medium with good moisture retention and drainage.

The added bat guano provides a naturally rich source of phosphorus and other plant nutrients, while lime and magnesium limestone are used to buffer the substrate to a pH of 5.7. The result is a strong, pre-fertilised soil that's particularly well suited to established plants moving through vigorous growth and flowering.

If you're looking for a Bat Mix soil that gives you the benefits of guano without paying premium-brand prices, Tropic offers excellent value in a 50-litre bag.

Key Benefits

• Bat guano enriched – contains Original Bat Guano Pro for slow-release organic nutrition.
• Pre-fertilised soil – gives established plants a strong nutrient base straight from the pot.
• Rich in phosphorus – supports root development, flowering and fruit production.
• Slow-release feeding – nutrients become available gradually as biological activity breaks down the guano.
• 45% Baltic peat – provides moisture retention and a consistent root-zone structure.
• 45% German peat – contributes to the rich, peat-based growing medium.
• 10% perlite – improves drainage and maintains air space around the roots.
• Pre-buffered – lime and magnesium limestone help maintain a stable root-zone environment.
• pH 5.7 – formulated for soil-based growing.
• RHP approved – produced to recognised horticultural substrate standards.
• 50-litre bag – suitable for individual pots or larger soil-based setups.
• Produced in the Netherlands.

Why Use Bat Guano Soil?

Bat guano has been used by organic growers for years because it provides a naturally concentrated source of plant nutrition, particularly phosphorus.

Phosphorus plays an important role in root development, energy transfer, flowering and fruit formation, which is why guano-based soils are particularly popular with growers focused on later-stage performance and crop quality.

Unlike a fast mineral feed, the nutrients held within organic guano become available gradually as microorganisms in the growing medium break the material down.

This creates a more sustained feeding effect and means the soil itself can provide a significant part of the plant's nutrition before additional bottled fertiliser is required.

Slow-Release Nutrition Built Into the Soil

One of the main advantages of Tropic Bat Mix is that you're not starting with an empty growing medium.

The substrate already contains organic fertilisation, with bat guano continuing to release nutrients as the biology in the root zone processes it.

That makes it particularly useful for growers who want the soil to do more of the feeding rather than relying entirely on liquid nutrients from the start.

Because this is a rich growing medium, we'd avoid immediately adding a heavy base feed after transplanting. Let the plant use the nutrition that's already present and introduce additional feeding gradually as demand increases.

Peat & Perlite for Drainage and Aeration

A nutrient-rich soil still needs the right physical structure around the roots.

Tropic Bat Mix uses a blend of 45% Baltic peat, 45% German peat and 10% perlite to balance moisture retention with drainage and aeration.

The peat holds water and nutrients around the root zone, while the perlite creates additional air spaces and allows excess water to drain more freely.

This helps prevent the substrate becoming overly dense or waterlogged and keeps more oxygen available around the developing root system.

Pre-Buffered for a Stable Root Zone

Tropic Bat Mix is pre-buffered using lime and magnesium limestone, helping maintain a more stable environment around the roots.

The finished substrate has a pH of 5.7, providing a suitable starting point for nutrient availability in soil-based growing.

Because the media is already prepared and fertilised, there's very little work required before potting up.

Tropic Bat Mix vs Tropic All Mix

Both are rich, pre-fertilised soils, but they suit slightly different approaches.

Tropic All Mix is the more general-purpose option, giving you a balanced pre-fertilised soil for established plants.

Tropic Bat Mix is the guano-focused option. We'd choose it when you specifically want the added slow-release organic nutrition and naturally phosphorus-rich characteristics of bat guano.

If you're focused on flowering, fruiting and crop quality, Bat Mix is the richer option of the two.

Pair Tropic Bat Mix with Shogun Terra Nutrients

Tropic Bat Mix already contains a substantial nutrient charge, so there's no need to begin with a heavy bottled feed straight after transplanting.

Once the nutrition in the media begins to run down, we'd pair it with the Shogun Fertilisers Full Soil Nutrient Kit.

The Shogun soil kit is built around Samurai Terra Grow and Samurai Terra Bloom, giving you a complete soil-specific feeding programme that can take over as the nutrient charge in the Bat Mix is gradually used up.

The key is not to rush it. Let the Bat Mix provide the early nutrition, then introduce your Shogun feed according to plant demand.

How to Use Tropic Bat Mix

1. Loosen the media: Break up any compressed areas before filling your pots.
2. Fill pots without compacting: Keep the structure loose so the peat and perlite can maintain good drainage and aeration.
3. Use with established plants: Bat Mix is a rich medium, so it's better suited to established plants than delicate seedlings or newly rooted cuttings.
4. Water evenly: Thoroughly wet the root zone and allow excess water to drain away.
5. Allow a wet and dry cycle: Avoid keeping the substrate permanently saturated.
6. Don't overfeed early: Remember that the soil already contains organic fertiliser and bat guano.
7. Introduce nutrients gradually: Begin additional feeding once the plant starts to use up the nutrition already present in the soil.

Our Take

For us, the main appeal of Tropic Bat Mix is how much you're getting for the money.

It's a proper peat-based Bat Mix with perlite, buffering and a genuine guano charge, but it comes in at a price that makes sense even when you're filling several pots.

We'd choose it over a standard All Mix when the grower specifically wants a richer soil with slow-release organic nutrition and a stronger focus on flowering and crop quality.

The only thing to remember is that it is already heavily fertilised. Don't treat it like a Light Mix and immediately pile bottled feed on top of it.

Tech Specs

• Product: Tropic Bat Mix
• Bag size: 50 litres
• Media type: Bat guano enriched, pre-fertilised soil
• Baltic peat: 45%
• German peat: 45%
• Perlite: 10%
• Perlite size: 2–6mm
• Bat guano: Original Bat Guano Pro
• Bat guano content: 150g/m³
• Buffering: Lime and magnesium limestone
• Certification: RHP approved
• pH: 5.7
• Suitable for: Established plants and soil-based growing
• Country of production: Netherlands

Explore the Full Tropic Growing Media Range

If you like the quality and value of Tropic Bat Mix, take a look at the full Tropic growing media range.

The range includes Tropic All Mix, Light Mix, 100% Coco Pro and 70/30 Coco Mix, giving you a choice of soil and coco growing media for different feeding styles and irrigation setups.

Top Tip: Tropic Bat Mix is already a rich, pre-fertilised growing medium, so don't rush into full-strength bottled nutrients after transplanting. Let the existing nutrient charge and bat guano do the work first, then bring in the Shogun Fertilisers Full Soil Nutrient Kit as plant demand begins to increase.