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scuba_steve · 01-21-2005, 01:50 AM

sure, argonite (crushed coral) as the substrate, or inside of the filters
limestone
eco complete substrate
shells
pieces of coral
a variety of other types of buffering substrates and rocks

dont know if you consider baking soda a chemical, but it raises ph to 8 very nicely, if you overdose it wont go higher than 8.5, very fish safe btw.

01-21-2005, 01:50 AM	#2
scuba_steve Fishy Member Join Date: Jan 2005 Posts: 21	Re: Increasing pH without chemicals. sure, argonite (crushed coral) as the substrate, or inside of the filters limestone eco complete substrate shells pieces of coral a variety of other types of buffering substrates and rocks dont know if you consider baking soda a chemical, but it raises ph to 8 very nicely, if you overdose it wont go higher than 8.5, very fish safe btw.