Jackson Posted July 19 Share Posted July 19 (edited) My KH test showed that adding a drop turned the water yellow after 1 drop . Or started to turn yellow . Never was blue to change to yellow . So according to the chart I am low on KH for my tetras . If I got it right . Lower higher not sure . I watched Irene on the coop video and she mentioned crushed coral . Is that the easiest safest way so she said . What other recommendations does anyone have to share for this ? Brand of coral , other additives . Edited July 19 by Jackson Link to comment Share on other sites More sharing options...
Mmiller2001 Posted July 19 Share Posted July 19 Most Tetras come from areas with low GH and low to no KH. 1 Link to comment Share on other sites More sharing options...
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