Maridia
Aquarium Advice Freak
- Joined
- Oct 9, 2013
- Messages
- 480
I just got a new RO unit. TDS is 0ppm for out water. Water in is 12-14ppm. Is this considered high? Or the norm? I get city water. Any thoughts? Thanks.
Why change the resin if it is still functioning?
Like I said before. Get an inline TDS meter so there will be no guess work. You will save money and preserve your tank in the long run.
http://www.bulkreefsupply.com/dual-inline-tds-meter-dm-1-hm-digital.html
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