High Human... I use it for a very unconventional reason.... I have type 1 diabetes and the nerve issues that go with it and I also have MS... so when I water I tend to be a bit heavy handed and I was literally putting indentions in the top of the soil so bad that you could see the top of the root ball sometimes... So the first thing I did {cause that is what I had on hand} was topped them with marbles... it worked beautifully but was a real pain to recollect them at the end of the grow so I found the hydroton but it helps disperse the water more evenly and doesn't leave holes in my soil...:
:... Hope that explains it a bit... If you have any questions that I can help you with please feel free to post them up.... If I don't know the answers I have some really smart folks that travel through here from time to time and can usually get ya an answer pretty quickly.....
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