I've been working on an automatic water change configuration at home and it got me thinking: even with buying salt in bulk and mixing it with RODI water at home, as system volume increases or size/frequency of water changes increase the costs still add up.
I figure it's about 50cents/gallon for water changes on our 200gallon system. This is with Red Sea "blue bucket" in the 200gallon bulk bags. The advertised 200 gallons is when mixed to 1.021 and I'm not sure who would mix it like that. It's probably closer to 175 gallons per bag at $90/bag shipped. A 10% water change (20gal on our system) is about $10. I'm not taking into account power to heat and mix the water or RODI consumable filter wear and tear.
How much per gallon does it cost you to do a water change and how much do you change out each month?
I figure it's about 50cents/gallon for water changes on our 200gallon system. This is with Red Sea "blue bucket" in the 200gallon bulk bags. The advertised 200 gallons is when mixed to 1.021 and I'm not sure who would mix it like that. It's probably closer to 175 gallons per bag at $90/bag shipped. A 10% water change (20gal on our system) is about $10. I'm not taking into account power to heat and mix the water or RODI consumable filter wear and tear.
How much per gallon does it cost you to do a water change and how much do you change out each month?