Newspaper as an NFT Spreader Mat
I've read a few other forums that have said to use 7-10 layers of newspaper as a cheap spreader / capillary mat.
To me, this seems it would A) mess up the ph and B) make your nutrient water dark/gray
There are a fair amount of publications saying using newspaper in compost and organic garden beds is fine, as recent (15+ years) ink is plant based in nature... but, using as an NFT mat I am skeptical about...
The reason I am asking is, I can't find the mat in the US easily. There is another thread here that mentions using thin felt from the hobby/crafts store..