Reef Central Online Community
Marine Depot

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 12/08/2018, 04:39 PM   #1
r6justin
Registered Member
 
Join Date: Jul 2010
Location: Dublin, OH
Posts: 169
multiple flow restrictors on RODI?

i have a 75GPD RO membrane but have 450 and 300 flow restrictors and I believe I need a 550. I'm planning on getting the correct one ordered but looking for something as a quick fix as setting everything back up. Can I just run them both on the same line so i get more restriction or will it not doing anything?


r6justin is offline   Reply With Quote
Old 12/08/2018, 05:39 PM   #2
Vinny Kreyling
Registered Member
 
Vinny Kreyling's Avatar
 
Join Date: Nov 2002
Location: Miller Place, NY
Posts: 5,569
Basically you are looking for a 4-1 ratio,
4 gallons of waste water for every gallon of product.
Whatever gets you there, you may have to settle getting close.


__________________
250 gallon mixed reef, 2 Reefbreeder's Photon V 2, RD 3 Speedy 80 Watt, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.
Vinny Kreyling is online now   Reply With Quote
Old 12/08/2018, 06:16 PM   #3
outssider
Registered Member
 
Join Date: Nov 2009
Location: Reseda, Ca.
Posts: 1,432
you can make yourself an adjustable flow restrictor very easily using parts from home depot....


Attached Images
File Type: jpg P8081343.jpg (61.9 KB, 15 views)
File Type: jpg P8081344.jpg (59.4 KB, 14 views)
__________________
Please don't feed the bears because the bears will become dependent on free handouts and forget how to take care of themselves Ö...

Current Tank Info: 75 Gal. Mixed reef
outssider is offline   Reply With Quote
Old 12/08/2018, 07:20 PM   #4
manateemark
Registered Member
 
Join Date: Apr 2013
Posts: 52
Quote:
Originally Posted by outssider View Post
you can make yourself an adjustable flow restrictor very easily using parts from home depot....
Despite that not being on the product water line I would batik be hesitant to be using copper plumbing parts with anything thatís going to be near my tanks water due to possible corrosion issues.


manateemark is online now   Reply With Quote
Old 12/09/2018, 03:19 AM   #5
otimer
Registered Member
 
otimer's Avatar
 
Join Date: Jan 2016
Location: Seoul Korea
Posts: 6
The flow restrictors we can easily buy are not so accurate in their flow rating. I'm using a rodi 1/4" ball valve and adjust to get 3.5~4:1 ratio of waste and purified water.


otimer 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 08:31 PM.


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.