Description
Nutrition Capsules
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Nutrition Capsules is an extra nutrient supplement – use tweezers to place the capsule in the gravel, close to the roots of fast-growing plants.
Nutrition Capsules contain both nitrogen, phosphor, iron and micro nutrients.
The nutrients are slowly released as the plants need them.
Use Nutrition Capsules for stem plants, Cryptocoryne, Echinodorus, Vallisneria etc. – all plants with sturdy roots.
How to use the product
Nitrogen, phosphor, iron and manganese, as well as all vital micro nutrients are released by the capsules over a period of 1-2 months. Place the capsules close to the roots of large solitary plants and plants with sturdy roots.
The capsules do not fully decompose and the small balls inside the capsules will remain in the substrate after all nutrients have been released. The balls are made of resin, which is biologically harmless.
Tropica Nutrition Capsules: Targeted Root Feeding in SG Tanks
Tropica Nutrition Capsules are root tabs we recommend for heavy root-feeders like swords, crypts and bulb plants such as Nymphaea. You push a capsule into the substrate near the roots using tweezers, delivering nutrients straight to where these plants take up the most. They are especially useful when your base layer is inert gravel or sand rather than a nutrient-rich aquasoil, a common situation for SG hobbyists who started with a plain substrate.
In our experience they complement, rather than replace, water-column dosing. Stem plants and epiphytes feed largely through their leaves, so liquid ferts still matter, but root tabs quietly top up the substrate for the bigger, hungrier species. Place them a few centimetres deep so the nutrients stay locked in the bed rather than leaching into the water, which helps keep algae in check in warm 27-29C tanks.
Find more in our root additives category. If you are unsure whether you need them, read do aquarium plants need fertiliser and our aquarium root tabs guide for placement and timing.

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