My tap water has a lot of ammonia and has killed two of my fish. I have a 5 Gallon tank (no filter). Lately, I have been using Publix brand spring water for my latest fish and he seems to be doing great (small bowl - doing daily 100% changes)
Can I get away with doing 50% water changes every week (on the 5 gallon)? or will that depend on the parameters?
I am considering downgrading to a 2.5 tank to save a bit of money on the water changes.
Btw, I understand the concept of "cycling" but I have not found a good source to guide me through the process. This is the reason I am not doing it at this time.