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R/O question

Discussion about fish health and water chemistry.

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Post Sat Jun 15, 2019 7:41 pm
lleife15 Level 1 Member
Level 1 Member

Posts: 16
Location: Buffalo, MN
Just a quick question regarding Reverse Osmosis. How many GPD R/O unit would I need for a 125-gallon tank? all feedback is appreciated.


Post Sun Jun 16, 2019 1:55 pm
Passionfish Level 20 Member
Level 20 Member

Posts: 12181
Location: apple valley, mn
RO units are sold by quoting the output of RO water with City type water pressure, most units create about 65 to 90 gal of RO water per 24 hours.
This number can be increased the use soft water and pressure pumps to force water through RO membrane. Another way to bump up production is remove di resins, accepting a higher ppm in RO water. Same for RO membrane. If you useRO water with 20 ppm TDS, the unit could likely put out 200 gal per day.
Like a complete unknown

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