Plagron Nutrients - Alga Bloom


Size: 500ml
Sale price£10.49

Organic Base Nutrient for the Bloom Phase

Alga Bloom is a 100% certified organic base nutrient that was created specifically for soil-based cultivation in the bloom phase. Growing organically is extremely simple, making it a great choice for newcomers. These nutrients are much more forgiving than mineral-based (hydroponic style) feeds, and there's no need to check EC levels. You can pH adjust your nutrients if you wish, but it's not absolutely necessary. This makes feed-time a much quicker and easier process, freeing up time for tending to your plants in other ways.

As the name suggests, Alga Bloom is formulated using algae. It's loaded with macronutrients, micronutrients and a complex array of amino acids that boost growth rates. Amino acids are involved in energy management and can be used as building blocks for growth. Alga Bloom also provides a source of nutrition for the beneficial bacteria and fungi that populate the rootzone; these microbes then make the macro and micronutrients in the feed available to plants for a two-pronged effect.

Alga Bloom delivers everything required to promote profuse flowering and fruiting, though it really comes into its own when teamed up with additives like Green Sensation and Power Roots and Sugar Royal.

Visit the Plagron Nutrients category to see the complete range.


Choose between 250ml, 500ml, 1 litre, 5 litre and 10 litre sizes using the dropdown menu.


  • 100% organic base nutrient - ideal for growers looking for natural products
  • Helps to nourish the microorganisms in the substrate (as well as your plants)
  • Optimised for plants in the bloom phase
  • Formulated to balance the pH values of the soil
  • Helps to improve the soil structure
  • Teams up nicely with the other organic additives in the Plagron range, like Sugar Royal
  • Used at up to 4ml for every litre of water

How To Use

Always shake Alga Bloom before use - this is especially important when using organic nutrients.

Use Alga Bloom at no more than 4ml per litre of water with every watering, starting at the beginning of the bloom phase, after switching to a 12/12 lighting pattern. Earlier on, in the veg stages, use Alga Grow.

Alga Bloom is not suitable for use with active hydroponic grow systems.

If you use an irrigation system, flush the pipes after use.

Don't worry if your bottle of Alga Bloom has a strange smell or is slightly cloudy, as this is not a cause for concern. It's not uncommon for organic products to have slight variations in consistency or appearance, and these changes will not have any adverse effects on your plants.

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