Even with the new fish from Conkels coming tomorrow? They will be acclimated to softer water then back to my hard Tap then for the next 5 days. They're coming tomorrow
You could do the two 25's today. Then go to one 25% tomorrow. And so forth and so on. You do 50% of your water today then really it isn't that big of a jump.
Plus if your pH is the same either way and your just changing hardness you should be OK. IMO
