Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > Lighting, Filtration & Other Equipment
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 03/07/2018, 03:44 PM   #1
AquaAdam
Registered Member
 
Join Date: Mar 2016
Location: Ontario
Posts: 95
Water not flowing constant through rodi

I purchased a used vertex deluxe 100gal. RODI that came with 2 extra filters so essentially its 6 cartridges (not sure if cartridges is the proper term but im new to the rodi @ home world). I hooked it all up and when turned on I notice the drain side flows through nicely at a constant stream while the rodi water output does not. It fluctuates between a steady flow then tapers off to dripping then back to steady flow then next to nothing... As I have never had one of these before, does that mean that one of the filters (eg. carbon) needs to be replaced?

I'd also like to know what people are using if they have 6 stage rodi maker. Mine is set up for pre filter 2 carbon 2 di and the ro membrane. Do you guys use 2 different kinds of carbon filters. I've seen theres different microns available so I'm just looking to get some input before I replace all the filters.

Someone's wife sold this to me so I didn't' have the opportunity to ask questions as she was just happy to see it going lol.


AquaAdam is offline   Reply With Quote
Old 03/07/2018, 04:49 PM   #2
qoeletd
Registered Member
 
qoeletd's Avatar
 
Join Date: May 2016
Posts: 38
probably the pressure of the water is inconstant, the drain flow seen constant but probably it isn't.
Have you a pressure gauge in-line mounted before the membrane? Or can you however measure your water pressure?


Inviato dal mio iPhone utilizzando Tapatalk


qoeletd is offline   Reply With Quote
Old 03/07/2018, 04:52 PM   #3
qoeletd
Registered Member
 
qoeletd's Avatar
 
Join Date: May 2016
Posts: 38
sorry, is your sequence carbon-carbon-membrane-di-di?


Inviato dal mio iPhone utilizzando Tapatalk


qoeletd is offline   Reply With Quote
Old 03/07/2018, 06:18 PM   #4
AquaAdam
Registered Member
 
Join Date: Mar 2016
Location: Ontario
Posts: 95
I believe its prefilter -> carbon then that has 2 lines, 1 into some sort of electric module, another passes through a 2nd electric module, then goes to the 2nd carbon then the 2nd carbon goes into the booster pump and from there to the membrane. the membrane has one line going to drain, the other one goes to another small module, then from that to the 1st di, then the 2nd di and out.

yes there is a pressure guage, at the pump before it goes out to the membrane.

Hope that makes sense.


AquaAdam is offline   Reply With Quote
Old 03/08/2018, 06:48 AM   #5
qoeletd
Registered Member
 
qoeletd's Avatar
 
Join Date: May 2016
Posts: 38
I don't know why you have 2 lines after second stage.
I have, prefilter 5mc - carbon - booster pump - membrane - di - di.
Probably the electric module is a low pressure interrupter for the pump, I put mine before the prefilter.

However, you have a pressure gauge, whit this can you confirm that the pressure is constant?


Inviato dal mio iPhone utilizzando Tapatalk


qoeletd is offline   Reply With Quote
Old 03/08/2018, 10:55 PM   #6
tkeracer619
Registered Member

 
tkeracer619's Avatar
 
Join Date: Jan 2006
Location: Westminster, CO
Posts: 17,090
I've seen this with a loose fitting post di. It could be letting air in so what you are seeing is the tube draining, filling, draining, filling, ect ect.

I'd recheck fittings. Post a pic of the unit.


__________________
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.
tkeracer619 is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 11:53 AM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright 1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.