Flush before or after

Slystone · 03/12/2013, 12:50 AM

Added a flush kit to my ro/di. Am I supposed to flush the membrane before or after making water?

andyrm66 · 03/12/2013, 01:09 AM

Before.

Dave & Monica · 03/12/2013, 05:48 AM

My mom said after, ohh, we're talking RO/DI... in that case I've read before. You could test the TDS after the RO, flush, then test again to see if it lowers. This is something you do infrequently anyhow.

MrClam · 03/12/2013, 07:19 AM

The instructions given with my spectrapure flush kit said to flush after making water so that the concentrated brine doesnt sit next to and degrade/deteriorate the membrane.

But a flush only takes about 30 seconds so why not do both?

Guygettnby · 03/12/2013, 11:32 AM

i have always flushed after making water. that is what i have read in many direction booklets and was told by a couple of companies.

now with that in mind i do flush all the air bubbles out of the system before i start making water. so i guess you could say i flush it for about 10 seconds before making water and for about 1 minute after making water. the more water i make the longer i will let it flush.

Palting · 03/12/2013, 11:41 AM

I usually do it both before and after. It's simple and quick enough.

bugs713 · 03/12/2013, 11:53 AM

Yup, that's what I do, before and after, about one minute or so each time. Also, since I started doing the before and after flush, my DI seems to last much longer!

hogfanreefer · 03/12/2013, 12:23 PM

Before and after here. My instructions recommended that, especially if you use it infrequently.

Slystone · 03/12/2013, 01:02 PM

I wasn't expecting before and after, but looks like that is what I will go with since i only make water once a week. Thanks.

andyrm66 · 03/12/2013, 11:57 PM

I've only done before, but figure it cant hurt to do after. Perhaps Ill start. I've got an auto shutoff so I'm not usually around after its done making water. The instructions that came with my Air Water Ice says flush for 2-3 mins before making water, if you haven't made water in a few days.

bdr · 03/13/2013, 05:11 AM

my vertex unit auto flushes before it starts and every 2 hours after that.

03/12/2013, 12:50 AM	#1
Slystone Registered Member Join Date: Dec 2012 Location: WI Posts: 258	Flush before or after Added a flush kit to my ro/di. Am I supposed to flush the membrane before or after making water? __________________ Nemomma (><((('> 28 gal nano cube, Rapid LED Retrofit, 50# LR 40# LS 2 ocellaris, yellow watchman goby. Firefish, yellow accessor

03/12/2013, 11:41 AM	#6
Palting Registered Member Join Date: Apr 2010 Location: Ohio Posts: 6,912	I usually do it both before and after. It's simple and quick enough. __________________ Anything I post is just an opinion. One of many in this hobby. Believe and follow at your own risk of rapid and complete annihilation of all life in your tank :) Current Tank Info: Incept 3/2010, 150 RR, 50g sump, 20g fuge, 150w 15K MH x3, T5 actinics x8, moonlight LED x6, 1400gph return, Koralia 1400 x4, 300 g skimmer, 4 tangs, 2 mandarins, 2 perc, 6 line, 3 cardinals, 2 firefish, SPS, LPS, zoas, palys, shrooms, clam

03/12/2013, 11:53 AM	#7
bugs713 In-A-Gadda-Divita! Join Date: Sep 2011 Location: Apache Junction, AZ - USA Posts: 2,345	Yup, that's what I do, before and after, about one minute or so each time. Also, since I started doing the before and after flush, my DI seems to last much longer! __________________ O\|\|\|\|\|\|\|O

03/12/2013, 12:23 PM	#8
hogfanreefer Registered Member Join Date: Mar 2012 Location: Conway, AR Posts: 2,117	Before and after here. My instructions recommended that, especially if you use it infrequently. __________________ DSA 155,Custom Trigger 42" sump/refugium, MP40 X2, MP 10 X 2, AI Hydra 52 X3, Apex controller, Tunze ATO Current Tank Info: DSA 155 gallon, mixed reef, SPS and wrasse dominant

03/12/2013, 01:02 PM	#9
Slystone Registered Member Join Date: Dec 2012 Location: WI Posts: 258	I wasn't expecting before and after, but looks like that is what I will go with since i only make water once a week. Thanks. __________________ Nemomma (><((('> 28 gal nano cube, Rapid LED Retrofit, 50# LR 40# LS 2 ocellaris, yellow watchman goby. Firefish, yellow accessor

03/12/2013, 01:09 AM	#2
andyrm66 Registered Member Join Date: Feb 2009 Location: Colorado Posts: 517	Before.

03/12/2013, 05:48 AM	#3
Dave & Monica Registered Member Join Date: Apr 2006 Location: Aurora, CO Posts: 1,255	My mom said after, ohh, we're talking RO/DI... in that case I've read before. You could test the TDS after the RO, flush, then test again to see if it lowers. This is something you do infrequently anyhow.

03/12/2013, 07:19 AM	#4
MrClam Registered Member Join Date: Nov 2012 Posts: 557	The instructions given with my spectrapure flush kit said to flush after making water so that the concentrated brine doesnt sit next to and degrade/deteriorate the membrane. But a flush only takes about 30 seconds so why not do both?

03/12/2013, 11:32 AM	#5
Guygettnby Registered Member Join Date: Apr 2007 Location: FL Posts: 3,050	i have always flushed after making water. that is what i have read in many direction booklets and was told by a couple of companies. now with that in mind i do flush all the air bubbles out of the system before i start making water. so i guess you could say i flush it for about 10 seconds before making water and for about 1 minute after making water. the more water i make the longer i will let it flush.

03/12/2013, 11:57 PM	#10
andyrm66 Registered Member Join Date: Feb 2009 Location: Colorado Posts: 517	I've only done before, but figure it cant hurt to do after. Perhaps Ill start. I've got an auto shutoff so I'm not usually around after its done making water. The instructions that came with my Air Water Ice says flush for 2-3 mins before making water, if you haven't made water in a few days.

03/13/2013, 05:11 AM	#11
bdr Registered Member Join Date: May 2011 Location: kingston ontario Posts: 375	my vertex unit auto flushes before it starts and every 2 hours after that. __________________ 75g display, 40g breeder sump. 85 lbs lr 2 korillia 1050gph powerheads, vertex 100gpd rodi, brs media reactor water went in jan 3 12