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Tue, Mar 22, 11 at 18:18
| Today I was in a hydroponics store to special order the Foliage Pro and my attention was diverted to these bags of silica rock, I could not see inside but the outside said "medium" and I assume I could also order the large or small if I wanted.
I searched some posts here, but could only find references to sand. Is the only difference the size of the particles? BTW, of all places, they had bales of Pro Mix! And a months-long search on the internet had only pointed to special ordering them from a place several miles away, over an hours drive on the freeway. This store is 3 minutes from my house. Who would've thought?! Thanks, Suzie |
Follow-Up Postings:
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| Silica rock is diatomite, which is the fossilized remains of diatoms, a type of hard-shelled algae. As a result of this, it is very porous and lightweight. The tiny pores are capable of wicking water inwards, so it holds water like a sponge. It's similar to Turface or Hydroton, if you're familiar with those. Most people would use it for hydroponics, or for growing orchids or other epiphytes. |
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