Aquarium Forum A forum devoted to aquarium fish, plants, techniques and fish keeping as a whole. en Malawi tank<script language='JavaScript' type='text/javascript'> <!-- --> </script> jan 2008-05-01 Answer no. 1 not too sure about which species are supposed to be peaceful ,all the ones I had in my Malawi setup were after each other all the time.Thew only way I could get round it was to overstock the tank and add loads of rock for hiding places. I used coral sand in my set up ,it kept the PH at a nice 7.8 without having to use buffers. mickey 2008-05-16