Ro/di gpd real world estimates

FlyTekk · 04/21/2013, 07:01 PM

Hey are people getting the output from their ro/di that the manufacturer suggest. For example i have a 75gpd with a extra 75gpd water saver upgrade kit.

But i dont even think im getting 75gpd. Let alone 150gpd

slief · 04/21/2013, 07:06 PM

On my Spectrapure 100 GPD high efficiency RODI, I have an adjustment to set the output vs waste ratio. I don't bother to measure my daily output capability but I have it adjusted so that there is more waste than good water in an effort to help my cartrdiges last longer. My unit is capable of a 1:1 ration of waste vs 0 TDS water. Depending on your RODI, you may have similar adjustability.

FlyTekk · 04/21/2013, 07:16 PM

I dont. Just wondering if people get 75 gallons a day from their 75 gallon unit. Some people tell me they only get half the amount. Is that the norm?

ksicard · 04/21/2013, 07:46 PM

How old is your membrane? The older it gets the less good water is produced IME.

FlyTekk · 04/21/2013, 07:47 PM

I just got it and hooked it up today for first time

buckeyereefer1 · 04/21/2013, 07:58 PM

what is your incoming water pressure ? i get 100ish GPD from my 75GPD unit with a booster pump set at 75psi.

dixiedog · 04/21/2013, 08:00 PM

I have the Typhoon III from Air, Water, Ice. It puts out about three gallons per hour, so yes, 75GPD or very very close.

GrimReefer555 · 04/21/2013, 08:23 PM

My 90 Gpd gets closer to 100 with cold water on my booster pump. (My tap's pressure was too low)

FlyTekk · 04/21/2013, 08:40 PM

Sounds like there's something wrong then. Not getting 150 for sure. Maybe 80 if im lucky.

Mike31154 · 04/21/2013, 09:30 PM

Manufacturer's membrane gpd ratings are based on a certain water pressure, temperature & incoming TDS. If your supply water temperature, pressure or TDS deviates from that norm, your output will vary accordingly.

04/21/2013, 07:01 PM	#1
FlyTekk Registered Member Join Date: Jan 2003 Location: New York Posts: 144	Ro/di gpd real world estimates Hey are people getting the output from their ro/di that the manufacturer suggest. For example i have a 75gpd with a extra 75gpd water saver upgrade kit. But i dont even think im getting 75gpd. Let alone 150gpd

04/21/2013, 07:06 PM	#2
slief RC Sponsor Join Date: Sep 2009 Posts: 14,173	On my Spectrapure 100 GPD high efficiency RODI, I have an adjustment to set the output vs waste ratio. I don't bother to measure my daily output capability but I have it adjusted so that there is more waste than good water in an effort to help my cartrdiges last longer. My unit is capable of a 1:1 ration of waste vs 0 TDS water. Depending on your RODI, you may have similar adjustability. __________________ Director Customer Support Royal Exclusiv USA For All Royal Exclusiv & Bubble King questions please refer to our Sponsor forum: http://www.reefcentral.com/forums/fo...play.php?f=745 Current Tank Info: 480G display mixed reef, 90G sump, 90G refugium, 60G display refugium. Check out my build thread: http://www.reefcentral.com/forums/showthread.php?t=1783476

04/21/2013, 09:30 PM	#10
Mike31154 Registered Member Join Date: Apr 2008 Location: B.C. Canada Posts: 1,555	Manufacturer's membrane gpd ratings are based on a certain water pressure, temperature & incoming TDS. If your supply water temperature, pressure or TDS deviates from that norm, your output will vary accordingly. __________________ Mike Current Tank Info: 77g sumpless sw with rock, sand, a few critters, fishes & polyps. Lights, pumps.....

04/21/2013, 07:16 PM	#3
FlyTekk Registered Member Join Date: Jan 2003 Location: New York Posts: 144	I dont. Just wondering if people get 75 gallons a day from their 75 gallon unit. Some people tell me they only get half the amount. Is that the norm?

04/21/2013, 07:46 PM	#4
ksicard Registered Member Join Date: Aug 2012 Location: Atlanta, Georgia Posts: 538	How old is your membrane? The older it gets the less good water is produced IME.

04/21/2013, 07:47 PM	#5
FlyTekk Registered Member Join Date: Jan 2003 Location: New York Posts: 144	I just got it and hooked it up today for first time

04/21/2013, 07:58 PM	#6
buckeyereefer1 Registered Member Join Date: Jan 2011 Posts: 194	what is your incoming water pressure ? i get 100ish GPD from my 75GPD unit with a booster pump set at 75psi.

04/21/2013, 08:00 PM	#7
dixiedog Registered Member Join Date: Jan 2009 Location: Gainesville, Florida Posts: 1,626	I have the Typhoon III from Air, Water, Ice. It puts out about three gallons per hour, so yes, 75GPD or very very close.

04/21/2013, 08:23 PM	#8
GrimReefer555 Registered Member Join Date: Nov 2012 Location: Bay Area, Ca Posts: 213	My 90 Gpd gets closer to 100 with cold water on my booster pump. (My tap's pressure was too low)

04/21/2013, 08:40 PM	#9
FlyTekk Registered Member Join Date: Jan 2003 Location: New York Posts: 144	Sounds like there's something wrong then. Not getting 150 for sure. Maybe 80 if im lucky.