Essentials pH Meter Plagron Plants love the nitrogen-forward 3-1-3

Plants love the nitrogen-forward 3-1-3 ratio

then add slowly to your reservoir while stirring

Alternatively

This sits in the mid-to-premium bracket of complete nutrient kits

hand tools may still be cheaper

Essentials pH Meter Plagron Plants love the nitrogen-forward 3-1-3Essentials pH Meter Complete Feeding, No Guesswork The Essentials pH Meter is an essential grow room tool that delivers accurate and reliable pH readings. This allows you to mix nutrient solutions that are bang on point, which will help to maximise growth and development. They are designed to be water resistant and they are built to last. These units have been customer favourites for years and years. They're known for their reliability and robustness,