RO/DI unit from purewaterclub seller on e***?

[osborne]

Can I get some opinions from the experts on which to buy. I have reef and fish only tanks. Its about 20 gals a week just to top off. Thanks

 

[kube]

I bought the same one, $75 for it and $35 for shipping so it was like $110 total, I have 300 TDS going in and 0 TDS coming out, have had for 2 months now. Only recommendation would be turn the water supply off to it when its not in use