I go at 30 to 50% with regular tap water, dechlorinated. I have extremely soft water, however, and keep rainforest species.
A large mistake a lot of us make in discussions is assuming we know what tapwater is. It varies, even within the same city or region. I lived on an urban island where at one end, the water was moderately hard from limestone reservoirs, and at the other, was Amazon soft.
Where I am now, in another region, there would be no reason for me to buy an RO system. I breed cardinal tetras in my tap water here. So how one person manages water can differ greatly from another. My soft tap generates different advice and discussion than if I lived in an agricultural zone in the US midwest, with nitrates in my tap water.
A large mistake a lot of us make in discussions is assuming we know what tapwater is. It varies, even within the same city or region. I lived on an urban island where at one end, the water was moderately hard from limestone reservoirs, and at the other, was Amazon soft.
Where I am now, in another region, there would be no reason for me to buy an RO system. I breed cardinal tetras in my tap water here. So how one person manages water can differ greatly from another. My soft tap generates different advice and discussion than if I lived in an agricultural zone in the US midwest, with nitrates in my tap water.
