i was speaking ideally. Most fish can adapt to most conditions, i try to keep the fish as close to their own natural habitat. I.E., malawis in a heavily decorated all rock setup, 7.8-8.2 pH, some syno cats, etc.. I have no problem with mixing the lakes, i just choose not to personally because i like for my tanks to represent a certain biotype.
Finally reached 6 tanks... oh god, this addiction is getting serious. 75g mbuna tank, 65g gold severum, 55g OB peacock breeding colony, 30g(36x18) growout, 20 long Dwarf Alto's, 10g fry tank.
If I die young bury me in... An 8x2x2 with versa tops and a large sump for adequate filtration;)