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PostPosted: Feb 18th, '13, 01:49 
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Does anyone know if Red Lava Rocks can be used for the Grow Medium??? Will Red Lava Rocks affect the Ph of the water in the system??? Please let me know if this has ever been used. Thanks & Best Regards, Mike S.


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PostPosted: Feb 18th, '13, 03:11 
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This is one of the most used low cost media options. Please do a search for "scoria" or " red scoria" on the forum search, it's features, advantages/disadvantages, and safety have been discussed here at length.


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PostPosted: Feb 18th, '13, 05:27 
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PostPosted: Feb 18th, '13, 23:44 
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DrLuke & rsevs3: Thank you for your responses to my question. I will do a search for the Items that you have mentioned. Thanks Again.........Best Regards, Mike S.


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PostPosted: Feb 19th, '13, 02:58 
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I have red lava rock in the bottom half of my beds, then river rock on top (easier to work with).

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PostPosted: Aug 25th, '16, 09:10 
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Does anyone know the weight of 1 bag of red lava rock?

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PostPosted: Aug 25th, '16, 18:19 
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Will depend on the source of the scoria and how big the average diameter is I reckon.

How big a bag?

roughly 900kg/m3 for our local stuff @20mm


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PostPosted: Aug 25th, '16, 20:23 
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1 bag is .5 m3 but the size is not on it the bag. it's earthessentials by quickcrete at lowes.

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PostPosted: Aug 25th, '16, 20:57 
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How exact of a weight do you need? ~30 pounds if I remember correctly

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PostPosted: Aug 25th, '16, 21:13 
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this stuff?

http://www.lowes.com/pd/EARTHESSENTIALS ... k/50437588

0.5 ft3?

which is 0.014m3

which I have just noticed is on the bag :lol:

so would be 12.6 kg? which is close to 30lb from boss


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PostPosted: Aug 26th, '16, 01:24 
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That's close enough, figuring the strength the stand needs to be so, 30lbs X 23 bags = 720lbs ish and 12m3 media

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