Re: Lava Rock

[LeeH920226 at aol_com]

In a message dated 4/17/01 11:35:07 AM, caraway at erienet_net writes:

<< I bought the lava rock at Home Depot. >>

Now I have a question. Is there a difference between lava rock sold for BarBQ 
use and that sold for landscape use or aquarium use? I have a bag sold for 
BarBQ and it tests neutral (pH = 6.7) after soaking in RO water (TDS = 25) 
for only an hour (the RO water was 6.7 before adding the rock). There are red 
and black tinted rocks in the bag. This test was on a red rock. Or, should I 
just use it in the gas grille?

Lee Harper
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