The Planted Tank Forum - View Single Post - What's the best sand substrate for plant growth?
View Single Post
post #2 of (permalink) Old 08-03-2009, 02:49 PM
Planted Tank Guru
Hoppy's Avatar
PTrader: (79/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 19,606
"Sand" usually refers to a substrate with smaller particles than "gravel". Flourite has regular size particles and a "sand" version with smaller particles. "Play sand" tends to include very fine particles, almost like dust, while "pool filter sand" has particles all within one size range, somewhere around 1 mm particles.

With those definitions: the best "sand" for plants is probably Flourite black sand, because of its high CEC. Whether anyone has shown that Flourite black sand grows plants better than pool filter sand I don't know, but theoretically it should.

Hoppy is offline  
For the best viewing experience please update your browser to Google Chrome