Premium Lightweight Expanded Clay pebbles, size 10-16 mm often referred to as Hydroleca are made by pelletising and firing selected clays in a rotary kiln at a very high temperature. As it is fired, the organic compounds in the clay burn off, forcing the pellets to expand and become honeycombed while the outside surface of each pebble fuses to give a ceramic shell. The resulting pebbles are lightweight and have a high resistance to crushing. Being a natural product, expanded clay pebbles contain no harmful substances, are inert and have a neutral pH. The pebbles are resistant to frost and chemicals and will not break down in water. They are also non-combustible and have excellent sound and thermal insulation properties. PlantBooster expanded clay pebbles are pH neutral, porous and have the ability to store water and nutrients and the gaps between the pebbles provide good aeration for root systems. Expanded clay pebbles are used as a substrate in hydroculture / hydroponics and can be blended with other growing media to improve drainage and insulate roots from frost. They can also be spread as a top dressing around plants to retain moisture and help prevent weed growth. PlantBooster expanded Clay Pebbles are especially clean with an attractive terracotta/ light brown colour making them particularly suitable for plant toppings and situations where aesthetics are important. Please note, all quantities other than the 10 litre size are supplied in plain bags
G**4
Great product but quantity is deceiving
This is a great product, reduces weight in containers of all kinds and provides good drainage at the bottom of your containers too ( I used to go for old polystyrene but due to recent finds about plastic etc I have decided against that now!). However... even though I read the reviews, it was very difficult to calculate the quantity needed. I ordered the 10ltr bag and really should have ordered more because I only had enough for a rather skimpy layer in 4 window boxes and two medium size pots :( They should show a photo of a full bag stood beside something of a standard size so you can tell it's approximate amount, saying it is so many litres really doesn't help the average person!Other than that the service was good, no problems with delivery, and product appears to be doing well!
M**Z
Hydroponic Balls
Excellent just what l have searching for in a larger packet, then the smaller ones in the shops
L**L
Good wuality
Used these in my deck terra-cotta pots . Excellent base.
L**T
Good buy
It is what it is
G**O
Good
They look nice
A**R
Like description
5 stars
J**S
Check the size
Good quality, my bad, ordered wrong size bag! Always best to check.
R**N
Picture is deceiving
the amount that comes is barely a quarter of a bag
