I was wondering if anyone has used profile soil conditioner as a substrate in soft water tanks..I did a test and my tap water is 120ppm and and after adding profile it rose to 500+ ppm....It said it is just kilned fuellers earth and is inert...but it seems to leach carbonates....if anyone has used this and has any info please let me know your results..also..if this is going to harden my water what would be a good substrate for a softwater tank and plants included...I heard people using black beauty...is this safe....I do not want to get into the more expensive stuff like laterite or simular..just something that will not alter the water and grow plants... Thanks Al ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://www.digital.com for "Apistogramma Mailing List Archives"!