CrabbyCrabs Posted July 31, 2019 Share Posted July 31, 2019 So I purchased a 180 gpd mega Max cap rodi from spectrapure. I have high co2 in the well water so the RO goes to a brute for degassing then gets pumped through the di to another brute. I'm getting an odd answer from spectrapure. They are saying 3 gph is Max flow through the di resin. Any clue how that is when it's attached to a 180 gpd ro unit? Are they wrong? Why can I only run 2-3 gph through the di but if I installed the unit as shipped it would be seeing roughly 180 gpd? Anyone have some insight or thoughts. I can't see taking several days to make 100 gallons of rodi water. That can't be normal. Link to comment Share on other sites More sharing options...
Blue Z Reef Posted July 31, 2019 Share Posted July 31, 2019 That doesn’t make sense to me...I’ve never heard of needing to restrict flow through DI for some sort of extra dwell time or something (beyond the natural orifice restriction from fitting sizes and flow through the material itself). Also keep in mind they are saying 3 GPH not GPD which is 72 GPD (still not your 180gpd, but the loss shouldn’t be over half after DI). I’m not familiar with what all is involved with the excess CO2 degassing as I’ve never had that issue, hopefully someone else will know more...city water FTW? 😂 1 Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted August 1, 2019 Share Posted August 1, 2019 I don't know why you would need to degass the water before going through the DI. Your RO is likely no where near 180gpd anyways, unless for some reason your ground water is like 75 degrees. 50 degree water cuts your GPD rating in half, so yeah, like physics and stuff. Link to comment Share on other sites More sharing options...
CrabbyCrabs Posted August 1, 2019 Author Share Posted August 1, 2019 I use a booster pump. I can fill a 44 gallon brute in about 5 hours with just ro. You obviously don't know anything about co2 depleting di resin so you can either chime out or do some research before posting@pdxmonkey. Degassing well water that contains high co2 is necessary or you will burn through di resin in less than 100 gallons. I ro to a brute, aerate with a large pump and air stones for a few days then pump through di Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted August 1, 2019 Share Posted August 1, 2019 Wow we sure miss you around here crabby, always such a pleasure. FYI.. if your TDS is around 300 ppm..which isn't crazy high for well water than your percentage of DI loss from co2 alone would be around 2%.Sent from my SM-G960U using Tapatalk 1 1 Link to comment Share on other sites More sharing options...
CrabbyCrabs Posted August 1, 2019 Author Share Posted August 1, 2019 PDXkeyboard warrior, you are the type of people that have ruined Oregon. So there. Do some research on co2 in well water and it's effect on di resin, you might learn something. More than in theory research but actual proof. Link to comment Share on other sites More sharing options...
CrabbyCrabs Posted August 1, 2019 Author Share Posted August 1, 2019 Or better yet, talk to the people IN the water purification industry, not the city sheeple that think chloramines and flouride are good for you Link to comment Share on other sites More sharing options...
pdxmonkeyboy Posted August 1, 2019 Share Posted August 1, 2019 Talks to industry experts...thinks they are wrong.... posts question to forum.Tells forum member to go talk to the experts. Pete and Repete were walking down the street, Pete fell in a hole, who was left? Sent from my SM-G960U using Tapatalk 2 2 Link to comment Share on other sites More sharing options...
albertareef Posted August 1, 2019 Share Posted August 1, 2019 Okay folks... time to collectively chill. Leaving aside the CO2 question, I think everyone agrees that the flow rate restriction given for the DI resin doesn't make a lot of sense in the context of the overall rating for the system. The reality is it's 72 vs. 180 gallons per day so not an order of magnitude. If you were putting out something approaching the 180 per day with the unit running as originally designed, then I can't see there being any meaningful impact of continuing to run at that rate separately through the DI just based on pure logic (company advice aside). Since that seems to be the overall consensus from those who responded and answers the original question, I think it perhaps wise to just lock this thread before anyone gets any more agitated. Feel free to PM one of the board members or officers if you want to reopen this discussion for some reason. Thanks all. 2 1 Link to comment Share on other sites More sharing options...
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