Reef Central Online Community
Neptune Systems

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 online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > General Interest Forums > New to the Hobby
Register Blogs FAQ Calendar Mark Forums Read


User Tag List

Thread Tools
Old 09/25/2021, 11:15 AM   #1
Registered Member's Avatar
Join Date: Jun 2016
Location: Wisconsin
Posts: 110
Kalkwasser Dosing

Hi! I have a 20 gallon fusion nuvo with 2 clownfish, and 1 BTA. I have a very low nutrient system. My tank was running for 3 months at a previous apartment and now I set it up in my new apartment, itís been running here for a month. My pH is all over the place from 7.9-8.3. I tried opening windows but it still fluctuates. Especially after I dose microbacter clean it drops to 7.9 and then comes back up to 8.0-8.2. My DkH tends to drop from 8.9-8.3 ish in a weeks time. Iím trying to stabilize my pH and DkH so I decided to do it with kalkwasser. I have 1 gallon mixed with 1/3 scoop of BRS Kalkwasser. I am just wondering without any corals in the tankÖ but my DkH still drops (salinity is maintained at 35-36 with ATO and Apex) How much is okay to dose in a 20 gallon tank in 1 day at the low concentration mix of Kalk? I set it to 5 mL per day spread out with .5mL doses every half hour overnight. Is it not enough or too much to make a difference? is offline   Reply With Quote
Old 09/25/2021, 11:24 AM   #2
Vinny Kreyling
Registered Member
Vinny Kreyling's Avatar
Join Date: Nov 2002
Location: Miller Place, NY
Posts: 7,165
Years ago a wise man told me to use Kalk in my make up water.

250 gallon mixed reef, 2 Reefbreeder's Photon V 2, Deepwater BLDC 12, DAS EX-3 Skimmer, MTC mini cal, 2-3/4" Sea Swirls, Aquacontroller & 6 Tunze pumps.
Vinny Kreyling is offline   Reply With Quote
Old 10/23/2021, 04:43 PM   #3
Registered Member
Join Date: Feb 2007
Location: Santa Monica, California, USA
Posts: 2,506
If no corals, and probably no coralline, then I would not see a need to dose.

Inventor of the easy-to-DIY upflow scrubber, and also the waterfall scrubber that everyone loves to build:
SantaMonica is offline   Reply With Quote
Old 10/23/2021, 05:19 PM   #4
RC Mod
Sk8r's Avatar
Join Date: Feb 2006
Location: Spokane WA
Posts: 34,614
Blog Entries: 55
Just top off all evaporation with topoff water mixed at the ratio of 2 tsp kalk per gallon of ro/di water. Before starting, set your water parameters to agree with the ones in my sig line and it should prove a very stable system.


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 online now   Reply With Quote
Old 10/28/2021, 09:25 AM   #5
Registered Member
Join Date: Aug 2016
Posts: 46
Originally Posted by Sk8r View Post
Just top off all evaporation with topoff water mixed at the ratio of 2 tsp kalk per gallon of ro/di water. Before starting, set your water parameters to agree with the ones in my sig line and it should prove a very stable system.

Dan. is offline   Reply With Quote
Old 10/28/2021, 01:05 PM   #6
In Memoriam
five.five-six's Avatar
Join Date: Mar 2007
Location: Corona
Posts: 7,827
Blog Entries: 6
You have no consumption and unles your dose very slowly kalkwasser can be very dangerous. I would avoid kalkwasser in your situation completely or at most 1/2 tsp/gallon.

Starts with post 307

five.five-six is offline   Reply With Quote

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 10:20 PM.

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.