How to Choose the Right NPK Ratio for Your Hydroponic or Houseplant Setup

Confused about NPK ratios and which is right for your plants? Whether you’re growing leafy greens in a hydroponic setup or nurturing flowering houseplants, choosing the right NPK fertiliser can make all the difference. This guide explains what NPK means, how different ratios affect growth stages, and how to match fertiliser to your setup.

What is NPK and Why It Matters

NPK stands for Nitrogen (N), Phosphorus (P), and Potassium (K)—the three macronutrients essential for plant growth.

Choosing the right ratio ensures that your plants receive balanced nutrition throughout all stages.

Matching NPK Ratios to Growth Stages

While different NPK ratios can target specific plant phases, many growers prefer the simplicity and flexibility of a balanced solution. Our NPK 20-20-20 fertiliser is a versatile choice suitable for every growth stage—from seedlings to mature flowering plants.

This all-purpose solution makes plant care easier—just adjust the dilution based on growth stage and frequency of feeding.

NPK for Hydroponic vs Houseplant Setups

Hydro systems require precise nutrient control. Houseplants need consistency and safety.

Both benefit from chelated micronutrients and easy-absorption blends.

Common Mistakes to Avoid

Your Takeaway

Choosing the right NPK ratio is about more than numbers—it’s about understanding your plants’ needs at every stage. With a balanced fertiliser like NPK 20-20-20, you’re covered from seedling to harvest with one reliable formula.

Explore our complete fertiliser range and give your plants the nutrients they deserve.