cheap....? unfortunately, cheap and saltwater tanks do not end up going well.
even something very small will have an impact on cost. keep that in mind before you start.
so you're going to add the water to your tank that he has deemed fit to need removing from his?
not a good idea.. unless you WANT high nitrate and alot of algea growth
maybe for starters while the tank is establishing but this is NOT a long term (otr even short term) solution
