SOunds like you have experience with FW (cichilds arent the normal beginner fw fish). Is your tank a FO? I think losses do come to even the best of us - and I don't think you should discourage yourself. With *Some* people, it may make sense to stop purchasing anymore fish to just do a check and make sure all the parameters stabilize.
For others - perhaps yourself included, it may be helpful to start a small journal - like where you bought the fish, how you acclimated it, etc. This way, you won't feel hopeless and think you are unable to maintain the fish - when in fact perhaps a simple change in the way you obtain/acclimate the fish may do the trick.
Ive seen plenty of marine fish go - sometimes because of my neophyte experience - but also sometimes because the LFS said "oh yeah - that will work just fine in your tank".
Anyways - best of luck in whatever your decision. I think getting the "other half" to buy-in to the hobby is perhaps one (if not the most) of the most important things.
For others - perhaps yourself included, it may be helpful to start a small journal - like where you bought the fish, how you acclimated it, etc. This way, you won't feel hopeless and think you are unable to maintain the fish - when in fact perhaps a simple change in the way you obtain/acclimate the fish may do the trick.
Ive seen plenty of marine fish go - sometimes because of my neophyte experience - but also sometimes because the LFS said "oh yeah - that will work just fine in your tank".
Anyways - best of luck in whatever your decision. I think getting the "other half" to buy-in to the hobby is perhaps one (if not the most) of the most important things.