Grow!T Clay Pebbles (4mm-16 Mm), 40 L Soils Does not significantly alter pH

Does not significantly alter pH levels

Stack is a natural plant nutrient made from kelp extract

Carbonite HD is Grabber's heaviest

It is suitable for use in soil

Grow!T Clay Pebbles (4mm-16 Mm), 40 L Soils Does not significantly alter pHGROW! T Clay Pebbles, 4mm 16 mm, 40 L GROW! T horticultural clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure and ability to cover a large surface area, they offer the ideal environment to foster beneficial bacterial growth around the root zone, leading to naturally