CANNA SPANNER

Description

Canna Spanner is the purpose-built tool for opening and closing the sealed screw caps on Canna nutrient bottles quickly, cleanly, and without the frustration of sticky hands or spilled concentrate. We have been recommending the Canna Spanner to UK growers since 2017 as one of those small but genuinely useful accessories that makes the nutrient mixing routine significantly more efficient, especially when working with multiple bottles in a feeding programme.

Why the Canna Spanner Makes Nutrient Mixing Easier

Anyone who has worked with Canna nutrients regularly knows that the combination of sticky nutrient concentrate on the outside of bottles and tight-fitting caps can make opening and resealing bottles a messy, time-consuming process. The Canna Spanner is designed with a grip profile that matches the Canna bottle cap exactly, providing the torque needed to break the seal on a stiff cap without slipping or requiring excessive force. The plastic construction is nutrient-resistant and easy to clean, so residue from chelated nutrient solutions will not degrade the tool over time. In a busy nutrient mixing routine — particularly in commercial settings where multiple feeds are prepared daily — the time and mess saved by using the right tool quickly adds up. The spanner also makes it easier to ensure caps are properly tightened after use, which is important for preventing air exposure and oxidation of liquid nutrients in storage.

How to Use the Canna Spanner

Fit the spanner over the Canna bottle cap, ensuring a snug engagement with the cap’s profile. Apply steady rotational pressure to loosen or tighten. The mechanical advantage of the spanner means you will need significantly less force than using your hands alone. After use, rinse the spanner under running water and dry thoroughly before storing. Keep with your measuring equipment and nutrient bottles for easy access during mixing sessions. The Canna Spanner is compatible with the standard cap sizes used across the Canna nutrient range including Canna A&B, Rhizotonic, Cannaboost, and Canna PK 13/14.

Add the Canna Spanner to your order alongside your Canna nutrient programme for a tidier, more professional mixing experience. Browse our full range of Canna nutrients, measuring equipment, and feeding accessories for everything your grow needs.