Reef Central Online Community
Live Aquaria

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 > The Reef Chemistry Forum
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 04/24/2021, 08:15 AM   #1
odin5738
Registered Member
 
Join Date: Feb 2007
Posts: 104
DKH swings

90gal mixed reef apex DOS and Neptune
DOS settings 7O% through photo period 30% at night
Value 8.3
Range .4
Limit 35
120 ml total 3 intervals BRS soda ash and calcium
18 ml-—-84ml during photo period—-18 ml
Swing time: Midnight 8.01 6am 7.96 noon 8.13 6pm 8.31
This was yesterday but this is the trend about .3 swing
Calcium pretty stable at 400 and mag at 1425
Is this a normal swing or can I flatten it?
My other concern is the amount of additive
120ml seems to be a lot.


odin5738 is offline   Reply With Quote
Old 04/27/2021, 06:36 AM   #2
Timfish
Registered Member
 
Timfish's Avatar
 
Join Date: Jul 2010
Location: Austin, TX
Posts: 1,917
I got no clue if that's a normal change in the daily alkalinity consumption. One variable that has only recently had any significant research done is the world wide spike of oxygen around solar midnight, (here's the link and pers comm. with Dr. Haas). This might account for the higher reading in the middle of the night compared to 6 AM. Daily changes in photosynthesis, food consumption, resperation by all the organisms, will all affect alkalinity. I only concern myself with long term stability.


__________________
"Our crystal clear aquaria come nowhere close to the nutrient loads that swirl around natural reefs" Charles Delbeek
Timfish 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 10:49 AM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 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 © 2021 DragonByte Technologies Ltd.