I have a larger than needed filter and check the water regularly - I know this is no substitute but weekly changes are not practical. I have accepted advice from my local suppliers on the compatibility of the fish. Lessons learnt - do your own homework. I have (through trial and error) setup...
Problem: Of my 6 original Angels 5 have died overnight (one survives)
Background: I have been building up my tank over the past two years, slowly introducing fish. The last fish added was approx. 1 year ago. I purchased my six angels as young (so that this would reduce them being antagonistic...