Reef Central Online Community

Go Back   Reef Central Online Community > General Interest Forums > The Reef Chemistry Forum
Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Unread 09/11/2020, 06:05 PM   #1
CBafia
Registered Member
 
Join Date: Mar 2016
Posts: 1
Does adding pure RODI water (0 ppm) dilute Ca, alk, and Mg?

As the title states, will adding clean rodi water dilute my parameters? I know salinity will go down obviously but what about my other parameters?

Sent from my SM-G960N using Tapatalk


CBafia is offline   Reply With Quote
Unread 09/11/2020, 07:45 PM   #2
Sk8r
RC Mod
 
Sk8r's Avatar
 
Join Date: Feb 2006
Location: Spokane WA
Posts: 34,628
Blog Entries: 55
It contains nothing but h's and o's. H20 with abso-tively nothing else in it, so yes. However, if you need to maintain calcium for shelled creatures or stony coral, set your basic parameters to match mine in my sig line, then add 2 tsp calcium per gallon of ro/di waiting in your ro/di topoff reservoir: Mg depletes very slowly, and your buffer will hold out if not challenged by a fall in MG past the 1200 mark. It's 'magic' but it works, being basic ocean chemistry. Seawater dissolves old coral skeleton and old limestone (same thing) to keep the calcium up, and CAN dissolve it readily given a buffering (DKH) at 8.3 and a magnesium level (the seabed contains LOTS of mg....at 1200 plus. I like `1350 as a mg reading that will hold a long time. If youget to where you are tossing in expensive tablespoons of calcium, switch to Mrs Wages' Pickling Lime, (calcium) from the grocery store, and just keep your alk and mg up. Far, far cheaper. And you can't mismeasure it: only 2 tsp of it per gallon CAN dissolve in rodi water.


__________________
Sk8r

Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, yellow tang, sailfin blenny,royal gramma, ocellaris clown pair, yellow watchman, 100 microceriths, 25 tiny hermits, a 4" conch, 1" nassarius, recovering from 2 year hiatus with daily water change of 10%.
Sk8r is offline   Reply With Quote
Unread 09/12/2020, 12:07 AM   #3
joseserrano
Registered Member
 
joseserrano's Avatar
 
Join Date: Oct 2016
Location: Tustin/Santa ana
Posts: 83
Yes it will. Test your tank. If you are dosing, you should be familiar with testing


joseserrano is offline   Reply With Quote
Unread 09/24/2020, 10:46 AM   #4
dav2245
Registered Member
 
dav2245's Avatar
 
Join Date: Jul 2020
Posts: 13
What would happen if you over dos cal and mag? Would you water get cloudy?

Sent from my SM-N975U1 using Tapatalk


dav2245 is offline   Reply With Quote
Unread 10/01/2020, 08:45 AM   #5
gavij012379
Registered Member
 
Join Date: Sep 2003
Location: Cleveland, OH
Posts: 173
Quote:
Originally Posted by dav2245 View Post
What would happen if you over dos cal and mag? Would you water get cloudy?

Sent from my SM-N975U1 using Tapatalk
If you overdose it high enough, you will have marine snow and it will precipitate out of the solution.


gavij012379 is offline   Reply With Quote
Unread 10/01/2020, 08:56 AM   #6
dav2245
Registered Member
 
dav2245's Avatar
 
Join Date: Jul 2020
Posts: 13
Quote:
Originally Posted by gavij012379 View Post
If you overdose it high enough, you will have marine snow and it will precipitate out of the solution.
Wow thanks for the info.

Sent from my SM-N975U1 using Tapatalk


dav2245 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



All times are GMT -6. The time now is 11:00 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 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 ©1999-2022
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.