I tried coco and had a super gnat problem both times. Seems the local coco is too buggy. Will coco help keep your PH in line?
G`day Noyd
Diatomaceous earth .
Will do the job . Plus add silica to your mix .
Easy to access in Oz .
http://www.onlinehorsesupplies.com.au/shipping_quotes
Thanks for sharin
EB .
Gnats are in loose bagged coco like Canna which is why they have said they are going to start making 5.5 kg blocks for sale to avoid the gnats. GH and Cocotek don't have gnats in their blocks. The manufacturers use steam in the compression process.