When I initially set up my system 2 years ago I tried to reduce the cost by using blue metal chips in the bottom of my grow beds with expanded clay on top (never again!!
). Over time the 2 layers got mixed up & I recently decided to remove the blue metal. This has been the most ridiculously tedious job ever.... sorting 1000L of gravel by hand!!!
Anyway. I have got around 250 litres of blue metal in buckets that anyone can have for FREE!!! This may suit a newbie wanting to start a system on the cheap (plenty of bacteria to kick start cycling).
Alternatively you may just need chips for some concrete work, although I have to point out the gravel contains a minimum but still present amount of organic root material.
All I ask of any takers is bring your own trailer or buckets as I want to keep mine. Take the lot or take a little. I have another 100 litres to come also over the next week or two from the remaining bed to be sifted through.
Jon 0406027092. Located in Bayswater. I also drink beer if you want to donate an optional 6 pack...