The Planted Tank Forum - View Single Post - seachem matrix bio best ?
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post #70 of (permalink) Old 02-06-2013, 01:43 AM
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Unfortunately I am not able to tell, both are silica based but since pumice has such a huge range between 78ish percent all the way to about 89 percent. I can not tell, at this point I couldnt even difinitively say my BBQ grill scrubbers are pumice. and am considering removing them. The only thing I can say for sure is the channels or pores under microscope are very similar. El cheapo microscope though so at this point my two samples are in the hands of a geologist adjunct professor. It was suggested I heat both samples to about 800 degrees and if they flow then they do belong to the glass family of compounds.....but that wouldn't answer is Matrix pumice....

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