D deric203 New member Feb 15, 2007 #1 I need a ph solution of 4.0. I have borax but dont know how much to mix. ????
B bertoni Premium Member Feb 15, 2007 #2 Borax won't product a pH of 4. There are various vendors that produce good calibration solutions: http://www.reefkeeping.com/issues/2005-02/rhf/index.php There aren't any DIY recipes available, although borax can be used as a sort of sanity check: http://web.archive.org/web/20001102...twork.com/fish2/aqfm/2000/feb/bio/default.asp
Borax won't product a pH of 4. There are various vendors that produce good calibration solutions: http://www.reefkeeping.com/issues/2005-02/rhf/index.php There aren't any DIY recipes available, although borax can be used as a sort of sanity check: http://web.archive.org/web/20001102...twork.com/fish2/aqfm/2000/feb/bio/default.asp
