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Hydroponic 101: What You Need to Get Started

Hydroponics is quickly becoming the go-to method for indoor gardening enthusiasts who want to maximise yield, save space, and grow plants faster than traditional soil methods. It may seem intimidating at first, but hydroponic gardening is easier than you think! In this beginner’s guide, we’ll break down the essentials you need to get started and explain how Secret Gardens’ premium hydroponic fertilisers can give your indoor garden the boost it needs.


1. What Is Hydroponics?

Before we jump into the equipment and supplies you’ll need, it’s important to understand the basics. Hydroponics is a method of growing plants without soil. Instead, plants are grown in water that is rich in nutrients, allowing them to access everything they need directly. This method provides precise control over nutrient intake and water usage, making it one of the most efficient ways to cultivate plants indoors.

Using hydroponics allows you to grow year-round, regardless of the weather outside. Plus, it’s particularly useful for urban gardening or when space is limited. Secret Gardens' products are specially formulated to help you achieve high yields and healthy plants in a hydroponic setup.


2. Hydroponic System: The Core of Your Garden

The first step in starting a hydroponic garden is choosing the right hydroponic system. There are several different methods available, each with its own unique setup:

  • Deep Water Culture (DWC): Plants are suspended in a nutrient-rich water solution, with their roots submerged in oxygenated water.

  • Nutrient Film Technique (NFT): A thin stream of nutrient solution is pumped over the roots of the plants, providing constant access to nutrients and water.

  • Ebb and Flow (Flood and Drain): The plants are temporarily flooded with nutrient solution and then drained, allowing oxygen to reach the roots between feedings.

Start with a system that suits your space and experience level. Many beginners opt for a simple DWC or Ebb and Flow system to get their feet wet—literally!

Image showing lettuce growing in an NFT hydroponic system
Lettuce growing in a NFT system

3. Lighting: Mimicking the Sun Indoors

Proper lighting is essential for hydroponic gardening. Since your plants won’t be exposed to natural sunlight, you’ll need a reliable artificial light source. The most common choices are:

  • LED Grow Lights: Energy-efficient and customisable, these lights can provide full-spectrum light that mimics natural sunlight. More expensive than traditional HPS and MH lights.

  • High-Pressure Sodium (HPS) Lights: Known for promoting flowering and fruiting, HPS lights are ideal for advanced growers aiming for higher yields. Cheaper to purchase than LED but less energy efficient.

  • Fluorescent Lights: A beginner-friendly option that works well for small setups and leafy greens, but they may not be strong enough for larger, more light-demanding plants.

Make sure your light setup provides 12-18 hours of light per day, depending on the type of plant you're growing, and position the lights at the correct height to avoid burning the plants. Plants in vegetation should receive no less than 18 hours per day, whereas plants in flower should receive no more than 12 hours per day.

Image showing a working HPS light
Grow light with HPS bulb

4. Nutrients: Feeding Your Plants the Right Way

Since hydroponics relies on water instead of soil, your plants will need a nutrient solution to provide the essential elements they would typically get from the ground. This is where Secret Gardens comes in! Our Hydro Base Fertiliser is designed specifically for hydroponic setups, providing the perfect balance of nitrogen, phosphorus, potassium, and micronutrients to support healthy plant growth.

Why Choose Secret Gardens' Hydroponic Fertilisers? 🌱

  • Optimised Formulas: Our nutrient-rich formula is crafted to deliver all the essential elements needed for each stage of plant growth, from root development to flowering.

  • Easy to Use: Whether you’re a beginner or an experienced grower, our fertilisers are easy to mix and apply, making hydroponic feeding hassle-free.

  • Maximising Growth: With a focus on high absorption rates, Secret Gardens fertilisers ensure your plants get the nutrients they need for bigger yields and healthier foliage.

Simply mix the recommended amount of Secret Gardens’ hydroponic fertiliser into your water reservoir, monitor the pH, and watch your plants thrive!

Image showing the full range of Secret Gardens' Fertiliser

5. pH and EC Meters: Monitoring Your Nutrient Solution

The nutrient solution’s pH and electrical conductivity (EC) are key to ensuring your plants absorb nutrients effectively. For hydroponics, the ideal pH range is typically between 5.5 and 6.5. If the pH level is too high or too low, it can lock out essential nutrients and stunt plant growth.

  • pH Meters: Use a pH meter or test strips to check your water’s pH regularly and adjust it with pH-up or pH-down solutions to stay in the ideal range.

  • EC Meters: An EC meter will measure the concentration of nutrients in the solution, helping you avoid over- or under-feeding your plants. Maintaining the right nutrient balance is crucial for plant health.

Image showing a pH and EC meter
pH & EC Meter

6. Water Reservoir: Keeping Your Roots Happy

Your water reservoir will hold the nutrient solution that feeds your plants. Make sure you choose a reservoir that’s large enough to accommodate the size of your garden and plants. It's important to regularly monitor the water level and change the solution every week or two to prevent nutrient buildup.


7. Air Pump and Airstones: Oxygenating Your Nutrient Solution

Just like you need oxygen to breathe, your plants' roots need oxygen to thrive. An air pump and airstone are essential for oxygenating your water in hydroponic systems like Deep Water Culture (DWC). This keeps your roots healthy and ensures they can absorb nutrients efficiently.

Image showing a working air stone
Working Airstone

8. Final Tips for Hydroponic Success

Now that you’ve got the basics down, here are a few final tips to ensure your hydroponic setup thrives:

  • Cleanliness is Key: Always keep your hydroponic system clean to avoid algae and bacteria build-up.

  • Monitor Regularly: Keep an eye on water levels, nutrient strength, and pH levels. A little attention goes a long way!

  • Start with Easy Plants: If you're new to hydroponics, start with easy-to-grow plants like lettuce or herbs before moving on to more demanding crops.


Jump Into Hydroponics with Secret Gardens 🌿


Hydroponics is an exciting, rewarding method of indoor gardening that allows you to grow stronger, healthier plants in less time than traditional methods. By setting up the right system and using high-quality products like Secret Gardens' hydroponic fertilisers, you can achieve incredible results even if you're just starting.

Ready to start your hydroponic journey? Secret Gardens has all the fertilisers you need to set up a thriving, indoor hydroponic garden. Shop our range of hydroponic fertilisers today to get growing! 🚀🌱



Secret Gardens, Hydroponic Fertiliser, Grow Shop NZ, Indoor Gardening

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