aznbob
Aquarium Advice Regular
I have an old ro/di unit that is atleast 5 years old. I know the filters and membrane has never been changed. I'm thinking of using this but don't know if it's a good idea/investment. I'm thinking of either buying a new unit on ebay for $120 or only changing the ro membrane and use it as is. How should I do this? Is it even safe to change only the ro membrane?