The things growers are saying about Reiziger Expanded Clay.
Holds water and doesn't float.
Reiziger devotee, Breda, The Netherlands.
Reiziger Expanded Clay consists of extremely strong balls that are difficult to break. Not dirty or dusty so there’s little need to rinse it. I’ve reused it several times.
1. The list price, also known as the manufacturer's suggested retail price (MSRP), or the recommended retail price (RRP), of a product is the price at which the manufacturer recommends that the retailer sell the product. The price set out or referred to herein is a recommended price only and there is no obligation to comply with the recommendation. Actual dealer price will vary.
2. Coco coir pith containing high salt levels and/or untreated with magnesium and calcium.
3. Trichoderma Harzianum.
4. Expanded clay produced in densities less than 430kg/m3.