I also believe this may be due to there need for a constant and stable counductivity. As we all know in nature the counductivity is very stable from day to day it will hardly vary. In contrast a closed system aquarium is very diffrent the values increase as biological waste accumulates in the system. I have found for me that daily water changes more closely matches what we find in nature and produces healthy robust fast growing healthy fish. I think what may happen is that we overfeed, crowd and then when a water change is done the counductivty has changed dramiticly and we shock the poor fish. I do agree small water changes will solve this as well,however, I beleive that the key is that we maintain a constant level counductivity. As we can see there are many ways to achieve this depending on what we want to accomplish. For me I have found when we do good hearty water changes often we get stronger more robust fish, especialy when we are talking about riverine species. Dave Sanchez --- Tomoko Schum <tomokoschum@knology.net> wrote: > I recall hearing about the very similar experience > with > diplotaenia on Japanese apiso list last year. The > person > also resorted to very very small water changes to > get over > the problem. > > Tomoko > > > ------------------------------------------------------------------------- > 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. > apisto-digest@listbox.com also available. > Web archives at http://lists.thekrib.com/apisto __________________________________________________ Do You Yahoo!? LAUNCH - Your Yahoo! Music Experience http://launch.yahoo.com ------------------------------------------------------------------------- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto