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Plagron Alga Bloom 5l
Plagron Alga Bloom 5L is the bulk packaging of this organic bloom fertiliser based on seaweed extracts. With an NPK ratio of 3-2-5, this organic formula delivers all essential nutrients during the flowering stage. The 5-litre container is particularly suited for growers managing multiple plants or larger grow rooms requiring season-long feeding. The organically bound nitrogen provides gradual release preventing nutrient burn. Dose at a maximum of 4 ml per litre of water at every irrigation. Choose the economical 5L format and reduce your cost per feed significantly.
Plagron Alga Bloom 5L – bulk organic bloom nutrient for serious growers
Plagron Alga Bloom 5L is the large-format container of this widely used organic bloom fertiliser based on marine algae extracts. This bulk size is tailored for dedicated growers who feed multiple plants or want to stock up for an entire growing season. With a balanced NPK ratio of 3.3-2.3-5.4, Alga Bloom provides everything your plants require for prolific flowering. View the full selection of plant nutrients at Plant&Flower.
Key features
The 5-litre container holds exactly the same premium formula as the smaller bottles, offering a substantial per-litre cost advantage.
- NPK 3.3-2.3-5.4 — optimised for the bloom phase with high potassium levels
- 5-litre container — yields approximately 1,250 litres of nutrient solution
- 100% organic seaweed-based formula with comprehensive trace element profile
- Compatible with soil, coco coir and other growing media
Application & usage
The dosage is identical across all Alga Bloom bottle sizes: a maximum of 4 ml per litre of water at every watering during bloom. With 5 litres, you have sufficient feed for an extensive grow operation. Shake well before each use. Store frost-free between 0°C and 35°C. The complete Plagron product range is available at Plant&Flower for a comprehensive feeding programme.
Benefits for the grower
The 5-litre format delivers significant cost savings compared to smaller bottles. At the maximum dose of 4 ml per litre, this container produces up to 1,250 litres of nutrient solution. The organic formula with gradual nitrogen release ensures healthy plant growth without the risk of over-fertilisation. Pair with the rest of the Plagron Alga line for a complete organic feeding schedule.
Combinations & alternatives
Supplement Alga Bloom with Plagron PK 13-14 for an additional phosphorus-potassium boost during the final weeks of flowering. Use Plagron Alga Grow as the base feed during the vegetative stage. Growers considering a switch to mineral nutrition may find Plagron Terra Bloom to be a widely used alternative.
Conclusion
Plagron Alga Bloom 5L is the smart choice for growers cultivating organically at scale. The bulk container offers identical quality to the smaller bottles at a significantly lower per-litre cost. Order now from Plant&Flower and enjoy fast delivery across Belgium.
Technical specifications
| Primary elements (% w/w) | |
|---|---|
| Total nitrogen (Ntot) | 3.3% |
| Organic bound nitrogen (Norg) | 2.6% |
| Ammonium nitrogen (NH4-N) | 0.7% |
| Phosphorus pentoxide (P2O5) | 2.3% (water soluble) |
| Potassium oxide (K2O) | 5.4% (water soluble) |
| Trace elements (% w/w) | |
|---|---|
| Boron (B) | 0.012% |
| Copper (Cu) | 0.002% |
| Iron (Fe) | 0.023% |
| Manganese (Mn) | 0.014% |
| Molybdenum (Mo) | 0.0007% |
| Zinc (Zn) | 0.010% |
| Physical and chemical properties | |
|---|---|
| Acidity (pH) | 5.5 |
| Conductivity (EC) | 46 mS/cm |
| Density | 1.24 g/ml |
| Form | Liquid |
| Colour | Dark brown |
| Odour | Molasses specific |
| Foaming | None |
| Storage & usage | |
|---|---|
| Storage temperature | 0°C – 35°C (frost-free, away from direct sunlight) |
| Dosage | Max. 4 ml per 1 litre of water (1:250) |
| Application | At every watering during the flowering phase |
| Shelf life | 4 years after production (unopened) |
How long does a 5L container of Plagron Alga Bloom last?
At the maximum application rate of 4 ml per litre of water, 5 litres of Alga Bloom produces 1,250 litres of nutrient solution. For an average grow space with 10 to 15 plants, this is sufficient for multiple bloom cycles. Actual consumption depends on plant count, pot size and irrigation frequency.
Is the 5L format more cost-effective than smaller bottles?
Yes, the 5-litre container offers a considerable per-litre cost advantage compared to the 0.25L, 0.5L and 1L bottles. The larger the format, the lower your cost per litre of nutrient solution. For growers who feed regularly or maintain multiple plants, the 5L option represents the most economical choice.
Can I mix Alga Bloom with other Plagron products?
Yes, Alga Bloom is designed to work synergistically with other products from the Plagron range. Popular combinations include Alga Bloom with Green Sensation as a bloom booster or with PK 13-14 during the final flowering weeks. Add each product separately to the water and always check the EC value of your nutrient solution to prevent over-fertilisation.
How should I store an opened 5L container of Alga Bloom?
Store the opened container in a cool, dark location at a temperature between 0°C and 35°C. Avoid direct sunlight and frost. Always seal the cap tightly after use to prevent oxidation. Unopened, the product has a shelf life of 4 years from production. When stored correctly, quality is maintained after opening until the end of your growing season.
