The purer the water, the larger the Orbeez™ will grow. This is because the ionic / mineral content of the water affects the size. Make sure you are using clean, distilled water, when growing your Orbeez™ as they can grow to a maximum diameter of 14mm.
How big do Orbeez™ grow? How can I make my Orbeez™ grow larger?
Last Updated: 1433d