We have rock hard tap water here in LA so I've been mixing my tap water with distilled (half tap, half distilled) but my betta's fins are still curling. Is it a bad idea to just go 100% distilled with Seachem Equilibrium?
Also, is there an actual difference between distilled and RO water? I keep reading different things but no actual answer. I like distilled because I can just buy it at the grocery store in gallon jugs, so I'd rather stick with that if I can.