I just found out Excel Comprehensive has "0.0001% Copper (Cu) "...
Now my question... Is this enough to hurt inverts like Cherry Shrimp?
Need answers soon please!
Excel & Comprehensive are two very different things. That aside copper is usually present in higher concentrations in ordinary tap water so I can't see the concentrations in Excel being harmfull. I use Flourish Comprehensive in a tank that contains RCS with no bad effects & the copper concentration in Comprehensive is higher than in Excel.
Ok thank you Nutter... and yes I meant Flourish Comprehensive* : ) thanks!