Hydra Macros

Macronutrients and inorganic carbon for balanced plant growth.

Choose Hydra Macros when you want to replenish or fine-tune the macronutrient side of your fertilisation routine separately. It provides nitrogen, phosphorus, potassium, magnesium and inorganic carbon to support plant growth, structure and metabolism.

Choose it if you…

• Already understand your aquarium's fertilisation routine
• Want to manage Macros and Micros separately
• Need to match dosing to your plants' actual uptake
• Want an additional carbon source built into the routine

If you are just getting started

Hydra Core Nutrition combines Hydra Macros + Hydra Micros in one simple system. If you also want Hydra Carbon, choose Hydra Pro Nutrition.

How to use — reference dose for 100 L

Lightly to moderately planted aquarium: 1 pump per day.
Heavily planted aquarium: 2 pumps per day.

Use 6 days per week and pause on day 7, ideally alongside a partial water change. 1 pump ≈ 2 ml. Adjust the dose to plant mass, lighting, CO₂ availability and plant response.

How long it lasts

Duration depends on the daily dose and bottle size. Use the Hydra calculator to tailor the routine to your aquarium volume.