14/11/2025
Tap Water vs RO Water — what’s better for your plants?
This is a question we get all the time from aquascapers — and the truth is, both water types can be great! It all depends on your tank setup.
🌿 Tap Water:
Tap water naturally contains minerals like calcium, magnesium, and trace elements that support healthy plant growth. It’s convenient, consistent, and ideal for beginners or low-maintenance planted tanks. Plus, many hardy plant species thrive in it without extra adjustments.
💦 RO (Reverse Osmosis) Water:
RO water is completely purified — stripped of hardness and impurities. This makes it a favourite for advanced hobbyists who want to fine-tune their water chemistry for delicate plants or sensitive livestock. By remineralizing RO water, you decide exactly what goes in — giving you full control over GH, KH, and pH.
✨ Our tip: You don’t always have to choose one or the other! Mixing tap and RO water often gives the best of both worlds — stable minerals and controllable softness, helping you achieve a balanced and healthy planted tank.
What do you use in your setup — tap, RO, or a mix of both? Let us know below! 👇