|| i know you can add various things to your water to buffer the ph
|| towards a certain value, that value being different depending exactly
|| which mineral(s) you add, but does anyone know what will buffer to a
|| ph of 7?
|| Sodium bicarb buffers to around 8 i think
|| coral to around 8.2 ish
|| limestone...not sure

These numbers are relative to the water you start with.... if you're
starting with 7.0 water, adding baking soda can acheive 8.0, so if you want
7, and a kH of 3 or so, maybe adding CO2 which will bring back your pH to
7.2 or so...

I've used baking soda and CO2 to maintain a 7.0 tank for almost 2 years...
always stable

I've heard crushed coral, limestone, and marble chips are all good to use..

|| I did try evian! its got 360ppm bicarbonates (kh) and is ph 7.2, so
|| you can add as much as you need to achieve any kh you want, but its
|| effects seem to be temporary, and i think i need to add a solid so
|| that it can slowly dissolve.....but what to add?
||
|| chris

What is your water to start with??

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