sciencefiction
Member
- Joined
- 26 Feb 2013
- Messages
- 3,412
Again I’m somewhat sceptical
It has happened to me unfortunately, when the KH dropped to zero and pH plummeted. The sign is gasping at the surface, swimming vertically at the surface and losing balance or just sitting motionless on the substrate as you mentioned....At that stage the fish may not survive but many actually did in my case as I restored the water quality pretty fast, knowing the issue first hand.
also often dissimilar water parameters
What I am talking about is a scenario when KH goes down to zero. KH drops down due to nitrification. Bigger rates of nitrification, bigger drop, bigger risk if water is not changed sufficiently. Softer water is even more dangerous as the KH is low from get go. This is not to do with moving fish from one tank with good water quality to another. Fish normally adjust as long as there no extremes. Monitoring the TDS increase from tap is a preventative as increasing TDS is a sign of poor water quality and things spiral down from there...