kevin007
Hmmm...cories
u got fotm noms..do u want totm noms?
if u do, u got one 

compaction is something that happens with very fine substrate like sand. It's only a problem if the fine substrate is being used as the planting media-- as you have done. Gravity pulls the sand down, and over time the sand becomes dense and "compacted." This can cut off water flow to the roots and damage them as well.-cAtFiSh- said: