Atami B'cuzz Cocos Substrate 50L is a premium, lightly fertilised coco coir growing medium made from high-quality ripened, washed and buffered coco fibres, combining excellent water retention with a light, oxygen-rich root environment.
Coco coir has become a popular growing medium for growers who want a highly responsive root zone with excellent control over irrigation and plant nutrition. Atami Cocos Substrate combines the natural water-holding properties of coco fibre with an open structure that allows plenty of oxygen around developing roots.
Unlike Atami's unfertilised Washed & Buffered Cocos, this substrate is lightly fertilised. Atami states that it contains sufficient initial nutrition for approximately the first week of the growth cycle, after which an appropriate liquid nutrient and stimulator programme can be introduced.
The coco fibres are ripened, washed and buffered before use, helping create a consistent growing medium suitable for controlled coco cultivation.
With an official EC of 0.80-1.00, this is a prepared coco substrate rather than a completely unfertilised blank medium. Each bag contains 50L, with 70 x 50L bags per pallet.
Why choose Atami B'cuzz Cocos Substrate?
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High-quality coco growing medium - designed specifically for growing plants in coco coir.
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Ripened, washed & buffered - the coco fibres are prepared before use to create a reliable growing substrate.
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Lightly fertilised - contains initial nutrition to support approximately the first week of plant development.
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Excellent water retention - coco fibre holds nutrient solution effectively within the root zone.
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Light & airy structure - maintains valuable air space around developing roots.
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Supports root oxygenation - the open structure allows roots access to oxygen as well as moisture.
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Encourages strong root development - combines moisture availability with an oxygen-rich physical structure.
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Responsive feeding medium - ideal for growers who want close control over liquid feeding and irrigation.
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EC 0.80-1.00 - reflects its lightly fertilised formulation.
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Compatible with coco-specific nutrition - particularly well suited to Atami's B'cuzz Coco feeding programme.
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50L professional format - suitable for hobby growing, nurseries and larger horticultural production.
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70 bags per pallet - giving 3,500L of substrate on a full pallet.
Excellent balance between water & oxygen
One of the major advantages of coco coir is its ability to retain a useful quantity of water while maintaining a comparatively open physical structure.
Atami Cocos Substrate holds nutrient-rich irrigation water within the growing medium, making moisture readily available to the root system.
At the same time, the substrate remains relatively light and airy. This helps maintain oxygen around the roots rather than creating the dense, poorly aerated conditions that can occur in unsuitable or compacted growing media.
This balance between water availability and root-zone aeration is one of the reasons coco has become widely used for intensive container growing and controlled-environment horticulture.
Designed to support healthy root development
Roots require both water and oxygen. While irrigation provides the moisture and dissolved nutrients required by the crop, oxygen within the root zone is also fundamental to normal root function.
Atami specifically highlights the light structure of its Cocos Substrate and the resulting availability of oxygen to the roots.
A healthy, well-developed root system creates a larger interface between the plant and the growing medium, helping the crop access the water and nutrition supplied through the irrigation programme.
Maintaining appropriate irrigation frequency is therefore important. Coco should remain evenly moist without being treated exactly like a conventional soil or compost.
Ripened, washed & buffered coco fibres
Atami Cocos Substrate is produced from coco fibres that have been ripened, washed and buffered before being supplied as a finished growing medium.
Washing helps remove unwanted soluble salts accumulated within raw coco material, while buffering prepares the cation exchange sites naturally present within coco fibre.
These preparation stages are particularly important with coco because untreated coir does not behave in the same way as a conventional peat-based growing medium.
Using a properly prepared coco substrate gives growers a much more suitable starting point for controlled crop nutrition and irrigation.
Lightly fertilised for initial establishment
Atami B'cuzz Cocos Substrate differs from completely unfertilised coco products because it already contains a light initial nutrient charge.
Atami states that the substrate contains sufficient nutrition for approximately the first week of the growth cycle.
After this initial period, liquid fertilisers and stimulators can be introduced to provide the continuing nutrition required by the developing crop.
The exact point at which feeding needs to increase will depend on plant species, crop size, irrigation frequency and growing conditions, so the condition of the crop should always be considered alongside a feeding schedule.
EC 0.80-1.00
Atami specifies an electrical conductivity of EC 0.80-1.00 for Cocos Substrate.
This is an important distinction from Atami Washed & Buffered Cocos, which contains no added fertiliser and consequently has a much lower EC.
Cocos Substrate is intended to provide some initial nutrition before the grower transitions onto an appropriate liquid feeding programme.
Once regular feeding begins, growers using controlled coco cultivation can monitor the EC and pH of their nutrient solution to manage crop nutrition more precisely.
Feeding plants in Atami Cocos Substrate
Once the initial nutrient charge has been utilised, Atami recommends introducing liquid fertilisers and stimulators for optimum results.
A coco-specific base nutrient is the logical choice because coco has different nutrient-management characteristics from conventional soil and peat-based substrates.
Atami's B'cuzz Coco A&B programme is designed specifically for coco cultivation and allows nutrient strength to be adjusted as plants progress from growth through flowering and ripening.
Atami's current coco grow guide uses a nutrient-solution pH of approximately 5.5-6.0. EC and nutrient strength should be adapted according to crop stage, source water and plant response.
Cocos Substrate vs Washed & Buffered Cocos
Although the names are similar, these are two different Atami coco substrates.
Atami B'cuzz Cocos Substrate is lightly fertilised and has an EC of 0.80-1.00. It contains enough initial nutrition for approximately the first week of growth.
Atami Washed & Buffered Cocos contains no added fertiliser and has an EC below 0.3. It is intended for growers who want to take control of nutrition from the very beginning.
Cocos Substrate therefore provides a more immediately prepared starting medium, while Washed & Buffered Cocos provides a lower-EC blank canvas for growers who want complete control over the initial feed.
Cocos Substrate vs High Porosity Cocos
Standard Cocos Substrate should also be distinguished from Atami High Porosity Cocos.
High Porosity Cocos combines prepared coco with 30% perlite to create additional air space and faster drainage. Standard Cocos Substrate does not contain this added perlite.
Standard Cocos Substrate therefore provides the characteristic water-retention and aeration properties of prepared coco fibre, while High Porosity Cocos is intended for growers specifically seeking increased porosity and drainage.
50L coco substrate for professional horticulture
The 50L bag is suitable for individual container production as well as larger nursery and controlled-environment growing operations.
Each pallet contains 70 x 50L bags, providing a total nominal substrate volume of 3,500 litres per pallet.
The consistent, prepared nature of the substrate makes it suitable for growers who need a repeatable coco growing medium across larger numbers of containers or successive crop batches.
Atami B'cuzz Cocos Substrate 50L product details
| Brand |
Atami |
| Range |
B'cuzz |
| Product |
Cocos Substrate |
| Product type |
Coco coir growing substrate |
| Bag size |
50L |
| Growing medium |
Prepared coco fibre |
| Coco preparation |
Ripened, washed & buffered |
| Fertilisation |
Lightly fertilised |
| Initial nutrition |
Approximately the first week of the growth cycle |
| EC |
0.80-1.00 |
| Key characteristics |
Water retention, aeration & strong root-zone structure |
| Recommended ongoing nutrition |
Coco-specific liquid fertiliser & appropriate stimulators |
| Atami coco pH guidance |
Approximately 5.5-6.0 for the nutrient solution |
| Outer case quantity |
1 x 50L bag |
| Pallet quantity |
70 x 50L bags |
| Total nominal volume per pallet |
3,500L |
Atami B'cuzz Cocos Substrate 50L FAQs
What is Atami B'cuzz Cocos Substrate?
It is a prepared coco coir growing medium made from high-quality ripened, washed and buffered coco fibres. It is lightly fertilised and designed to combine good water retention with an airy root-zone structure.
Is Atami Cocos Substrate pre-fertilised?
Yes. Cocos Substrate is lightly fertilised. Atami states that it contains sufficient nutrition for approximately the first week of the growth cycle.
What is the EC of Atami Cocos Substrate?
Atami specifies an EC of 0.80-1.00 for Cocos Substrate.
Is Atami Cocos Substrate washed and buffered?
Yes. Atami describes the coco fibres as ripened, washed and buffered before they are supplied as the finished substrate.
When should I start feeding plants in Atami Cocos Substrate?
The substrate contains initial nutrition for approximately the first week. After this initial period, Atami recommends introducing appropriate liquid fertilisers and stimulators according to the requirements of the crop.
Does coco coir hold water well?
Yes. Coco fibre has excellent water-retention characteristics while maintaining a relatively light and airy physical structure around the roots.
Is Atami Cocos Substrate good for root development?
Yes. Its combination of moisture retention and an open structure helps maintain both water and oxygen within the root zone, supporting healthy root development.
Should I use a coco-specific nutrient with this substrate?
A coco-specific feeding programme is recommended for ongoing cultivation because coco behaves differently from conventional soil and peat-based growing media. Atami produces B'cuzz Coco A&B specifically for coco cultivation.
What pH should I use when growing in Atami coco?
Atami's current coco feeding guide uses a nutrient-solution pH of approximately 5.5-6.0.
Is Cocos Substrate the same as Atami Washed & Buffered Cocos?
No. Cocos Substrate is lightly fertilised with an EC of 0.80-1.00. Washed & Buffered Cocos contains no added fertiliser and has an EC below 0.3, giving growers control of nutrition from the start.
Does Atami Cocos Substrate contain perlite?
Standard Cocos Substrate does not use the 30% perlite formulation found in Atami High Porosity Cocos. Growers specifically wanting additional drainage and air space should consider the High Porosity version.
Is Atami Cocos Substrate suitable for commercial horticulture?
Yes. The 50L format and prepared, consistent nature of the substrate make it suitable for nurseries, controlled-environment horticulture and larger-scale container production as well as hobby cultivation.
How many 50L bags are on a pallet?
A full pallet contains 70 x 50L bags, providing a total nominal substrate volume of 3,500 litres.