Aqua Master Tools

Aqua Master Tools

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      Aqua Master Tools P50 Pro2 pH & Temperature Meter — IP67 Waterproof Pen Meter
      Aqua Master Tools P50 Pro2 pH & Temperature Meter — IP67 Waterproof Pen Meter
      Aqua Master Tools P50 Pro2 pH & Temperature Meter — IP67 Waterproof Pen Meter
      $139.95
      Aqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM & Temperature Meter
      Aqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM & Temperature Meter
      Aqua Master Tools P160 Pro2 Combo Pen — pH, EC, TDS, PPM & Temperature Meter
      $249.95
      pH, EC & Temperature Testing • Dutch Engineering

      Aqua Master Tools — Precision pH & EC Meters Built for Serious Growers

      If you've ever chased a nutrient lockout for a week only to realise your pH pen was out of calibration, you know exactly why a reliable meter matters. Aqua Master Tools is a Dutch testing brand that launched in 2018 with one clear goal — build measuring instruments that are accurate, built tough, and actually affordable. No bloat, no gimmicks. We stock their pH meters, EC/conductivity meters, temperature meters and calibration fluids here at The Grow Guys because they work, and because growers across Australia keep coming back for them.

      Why Growers Rate Aqua Master Tools

      Designed in the Netherlands
      Every meter is designed and developed in-house in the Netherlands — not sourced from a generic factory catalogue. That means the product you get was actually engineered for growers, not just relabelled.
      Accuracy Without the Premium Price Tag
      Aqua Master was built on the idea that precision shouldn't cost a fortune. Their meters compete head-to-head with pricier brands on accuracy, while keeping the entry point accessible for hobbyists and commercial growers alike.
      Built to Handle Real Growing Environments
      Grow rooms are wet, humid, and hard on gear. Aqua Master uses strong materials throughout their range — these aren't desk instruments, they're built for daily use in the conditions you're actually working in.
      Grower Feedback Built Into Every Update
      Aqua Master stays in direct contact with end users and feeds that feedback into every new product iteration — from the initial 3D sketch right through to mass production. If something doesn't work for growers, they fix it.
      Full Calibration Fluid Range Included
      A meter is only as reliable as its last calibration. Aqua Master produces their own calibration and storage fluids to match their meters — so you're not guessing at compatibility or hunting down third-party solutions.
      Available Australia-Wide Through The Grow Guys
      As one of Australia's stockists for Aqua Master Tools, we carry the core range and ship it to your door anywhere in the country. Free shipping on orders over $499, and we actually know how to use what we sell.

      The Aqua Master Story

      Aqua Master Tools came out of decades of hands-on experience with measuring instruments — the kind of experience that teaches you exactly where most meters fall short. In 2018, that knowledge became a brand. Founded in the Netherlands with a simple premise: growers deserve tools that are convenient, accurate, and priced for real people — not just labs and commercial operations with unlimited budgets.

      What sets them apart from the flood of cheaper meters on the market is that everything is genuinely designed in-house. From the first 3D sketch to the final production run, Aqua Master oversees the entire process at their Netherlands base. They're not rebranding whatever's cheapest to source — they're engineering specific solutions based on direct feedback from the growers using their gear in real grows, day in and day out.

      Since 2018 they've expanded their range significantly — pH meters, EC meters, temperature meters, combo units, and a full calibration fluid lineup — and distribution now spans the globe. In Australia, you'll find them here at The Grow Guys. A young, innovative company that's grown fast because the gear actually delivers. That's the kind of brand worth stocking.

      What Aqua Master Tools Makes

      Grow Guys Tip

      Calibrate before every feed cycle, not just when something looks wrong. The number one mistake we see is growers trusting a meter that hasn't been calibrated in weeks. A pH pen that reads 0.3 units off sounds minor — until your plants are locked out and you've burned two weeks chasing a ghost. Aqua Master's calibration fluids are matched to their meters, so use them. Two-point calibration (pH 4.0 and 7.0) takes two minutes and saves you a lot of grief.

      Common Questions About Aqua Master Tools

      Is Aqua Master Tools available in Australia?
      Yes — The Grow Guys in Invermay, Tasmania is an Australian stockist for Aqua Master Tools. We ship their full range Australia-wide, with free shipping on orders over $499. You can also visit us in store if you're local to Hobart or northern Tasmania.
      How does Aqua Master compare to Bluelab or Apera meters?
      All three are solid choices. Bluelab is the gold standard in commercial Australian grows and carries premium pricing to match. Apera is another reliable option. Aqua Master sits in a sweet spot — accuracy and build quality that competes seriously with both, at a price point that's easier to stomach, especially if you're running multiple meters across different areas of your grow.
      Do Aqua Master meters need calibration fluid, or can I use generic solutions?
      You can use generic calibration fluids at the correct buffer values, but Aqua Master's own calibration solutions are designed specifically for their meters and are the safest bet for accuracy. We stock their calibration range alongside the meters — pick them up together and you won't have to think about it.
      Where are Aqua Master Tools products made?
      Aqua Master Tools designs and develops all of their products in the Netherlands, where the company was founded in 2018. They oversee the full development process in-house — from initial design through to production — which gives them tighter quality control than brands that outsource design entirely.

      Get the Right Meter for Your Grow

      Browse the full Aqua Master Tools range at The Grow Guys — or reach out if you need a hand picking the right unit for your setup. We've used this gear and we know what works.

      Growers First, Retailers Second

      Welcome to The Grow Guys

      We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

      Meet The Grow Guys

      FAQs

      Calculated at checkout by weight and destination. Free shipping over $499*.

      Order by 2pm and it ships the same business day from Invermay, Tasmania.

      500+ products across 40+ brands, every one filtered through 14 years of real growing experience. Shipping Australia-wide.

      30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

      Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.