waterdrop
Enthusiastic "Re-Beginner"
Hi Sarah,
Unfortunately, as you well know by now, a fish-in cycling situation is a tough situation to be in. While it is good to understand to perform a very large water change such as your 80% one (since excess ammonia and/or nitrite(NO2) is far worse for the fish than other shocks in most cases) it doesn't really "last" to get you through multiple days, as you have seen. Instead, most fish-in cycling situations demand one or more a day. It's kind of like if you had a kid in a bottle and needed to keep refreshing their air on a regular basis so they could breath - you are the manual oxygen pump sort of thing (although of course what you are doing in the case of fish it taking away the excess ammonia (ammonia comes off their gills during their respiration process - it happens very quickly) and the subsequent nitrite produced when ammonia processing bacteria work on it (in a cycle these ammonia processing bacteria (A-Bacs I like to call them) come along much quicker and give you a long phase where they are very good at producing excess nitrite(NO2), which in many ways is even more deadly than ammonia.
Another thing to understand about the loss of the fish is that the effect is cumulative. Even though a test may have seemed to indicate low ammonia (disregarding the ambiguities of testing at the moment) you have to realize that the gill damage from even slightly elevated ammonia keeps building up over time and that even after a change to ammonia free water it would take the fish an even longer time to replace the gill cells and structures that were damaged. Most tropicals are just not good at coming back from ammonia damage, having evolved for eons in the pristine high volume waters of nature prior to us beginning to keep them.
My thoughts go out to you as I know you want to get past your fish-in cycle and I know how incredibly hard it can be to find the time for this stuff during busy family life. I have the same problem!
~~waterdrop~~
Unfortunately, as you well know by now, a fish-in cycling situation is a tough situation to be in. While it is good to understand to perform a very large water change such as your 80% one (since excess ammonia and/or nitrite(NO2) is far worse for the fish than other shocks in most cases) it doesn't really "last" to get you through multiple days, as you have seen. Instead, most fish-in cycling situations demand one or more a day. It's kind of like if you had a kid in a bottle and needed to keep refreshing their air on a regular basis so they could breath - you are the manual oxygen pump sort of thing (although of course what you are doing in the case of fish it taking away the excess ammonia (ammonia comes off their gills during their respiration process - it happens very quickly) and the subsequent nitrite produced when ammonia processing bacteria work on it (in a cycle these ammonia processing bacteria (A-Bacs I like to call them) come along much quicker and give you a long phase where they are very good at producing excess nitrite(NO2), which in many ways is even more deadly than ammonia.
Another thing to understand about the loss of the fish is that the effect is cumulative. Even though a test may have seemed to indicate low ammonia (disregarding the ambiguities of testing at the moment) you have to realize that the gill damage from even slightly elevated ammonia keeps building up over time and that even after a change to ammonia free water it would take the fish an even longer time to replace the gill cells and structures that were damaged. Most tropicals are just not good at coming back from ammonia damage, having evolved for eons in the pristine high volume waters of nature prior to us beginning to keep them.
My thoughts go out to you as I know you want to get past your fish-in cycle and I know how incredibly hard it can be to find the time for this stuff during busy family life. I have the same problem!
~~waterdrop~~