Non-buffering Sand...

[bv_reefer]

-all i can say is that it works for me, i used caribsea aragonite and my pH is
static at 8.5, doesn't go up or down so no need for baking soda-

[ron101]

Originally Posted by bv_reefer

-all i can say is that it works for me, i used caribsea aragonite and my pH is
static at 8.5, doesn't go up or down so no need for baking soda-

pH is not a good measure of buffering capacity or of carbonate hardness. What are you alkalinity levels without using a buffer/builder additive?

[Mik_101]

Well I'm never using baking soda my pH went from 9.0 to 8.8 and now I cant get the sucker down.

[bv_reefer]

-shoot i gotta get a good alkalinity test, it's useful for calcium and pH...

[bv_reefer]

-hey mik didn't u say vinegar drives ur pH downwards in small amounts?

[Mik_101]

Originally Posted by bv_reefer

-hey mik didn't u say vinegar drives ur pH downwards in small amounts?

Thats what I herd.

[justinl]

the use of black sand is very much like using a BB. only difference is that detritus will show up more and bacteria will have surface area to grow on.

buffering would not be a large concern imo unless you're adding weird stuff (which under normal circumstances you wouldnt be).