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08/19/2018, 01:12 PM
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#1 |
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Premium Member
 
Join Date: Feb 2002
Location: Balto/Washington Area
Posts: 716
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Booster Pump or House Pressure Change
I have a 75 gpd Filmtec RO membrane. My tapwater TDS is a whopping 340 and the post membrane reading is 37.
The pressure on the gauge is reading 37 PSI. I know 40 is minimum and 50-60 is better. Just checked the water pressure at several spigots in the house and the readings are 38-40 PSI...which would explain the RO/DI pressure. Is it better to get a booster pump for the RO/DI system or to increase the home water pressure to 50 PSI?
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"will spay for frags..." Current Tank Info: None currently, but researching for a new system |
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08/19/2018, 01:15 PM
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#2 |
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Registered Member
Join Date: Mar 2015
Location: Upstate NY
Posts: 5,313
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My water pressure in my home is 75PSI, and I love my shower!
If it were me, I would just increase the whole home pressure.
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80G SCA Build: http://reefcentral.com/forums/showthread.php?t=2560256 Originally posted by der_wille_zur_macht: "He's just taking his lunch to work" |
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08/19/2018, 02:01 PM
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#3 |
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Registered Member
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
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Choice is yours....IMO increasing your whole house is the better idea assuming you can... Easy to test...just turn the bolt on the pressure regulator or pump switch if well and see what you can get...
I upped my house to 60PSI
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Who me? |
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08/19/2018, 04:43 PM
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#4 |
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Registered Member
Join Date: Nov 2002
Location: Miller Place, NY
Posts: 7,206
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Pressure in my place runs 80 PSI.
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250 gallon mixed reef, 2 Reefbreeder's Photon V 2, Deepwater BLDC 12, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps. |
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08/19/2018, 06:36 PM
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#5 |
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Premium Member
Join Date: Feb 2002
Location: Balto/Washington Area
Posts: 716
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Well I upped my house pressure. RO/DI unit is now getting close to 50 PSI and the post-membrane is still reading 27. That's a 92% rejection rate. Not so good.
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"will spay for frags..." Current Tank Info: None currently, but researching for a new system |
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08/19/2018, 08:10 PM
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#6 | |
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Crab Free Zone
Join Date: Sep 2017
Location: Ontario, Canada
Posts: 2,906
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Quote:
I run about the same % and end up with 1-3ppm (assuming my meter is accurate) and I have never had any negative outcome. I note the manufacture of my RO says 96% rejection. (But with a * saying actual results may vary) is very very small print. If your not burning through DI usually fast, I would say no worries, make that water.... |
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08/20/2018, 08:14 AM
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#7 | |
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Registered Member
Join Date: Sep 2003
Location: North Carolina
Posts: 20,050
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Quote:
What brand/model membrane? Age of prefilters? Checking pressure after prefilters or before? Water temperature? Got more pressure capability? (can you go 60?)
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Who me? |
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08/21/2018, 05:32 PM
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#8 |
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Registered Member
Join Date: Nov 2009
Location: Reseda, Ca.
Posts: 1,717
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I run that exact same membrane ...240 in 4-5 out.....at 60 psi....I don't think 50 psi would be any different....
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Please don't feed the bears because the bears will become dependent on free handouts and forget how to take care of themselves …... Current Tank Info: 75 Gal. Mixed reef mostly sps |
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08/23/2018, 12:39 AM
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#9 |
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Registered Member
 
Join Date: Jan 2006
Location: Westminster, CO
Posts: 17,289
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Definitely house pressure, just make sure you don't get water hammers. If you're getting a huge drop something isn't right. I'd answer mcgyvr's questions and we can help further.
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Hobby Experience: 9200ish gallons, 26 skimmers, and a handful of Kent Scrapers. Current Tank: Vortech Powered 600G SPS Tank w/ 100gal frag tank & 100g Sump. RK2-RK10 Skimmer. ReefAngel. Radium 20k. |
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08/23/2018, 06:12 PM
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#10 |
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Premium Member
Join Date: Feb 2002
Location: Balto/Washington Area
Posts: 716
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I appreciate the offer of help. I'm going to go over the entire system again, pull the model numbers and then I'll post the answers to mcgyvr's questions. Thanks!
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"will spay for frags..." Current Tank Info: None currently, but researching for a new system |
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08/24/2018, 07:29 PM
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#11 |
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Premium Member
Join Date: Feb 2002
Location: Balto/Washington Area
Posts: 716
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Update: Problem solved. I'm not getting TDS of 3 post RO and prior to DI. I'm very happy with that.
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"will spay for frags..." Current Tank Info: None currently, but researching for a new system |
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08/24/2018, 07:30 PM
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#12 |
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Premium Member
Join Date: Feb 2002
Location: Balto/Washington Area
Posts: 716
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That should say "Now getting"...
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"will spay for frags..." Current Tank Info: None currently, but researching for a new system |
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