Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

Tier 1 Reefing Inc

Products

Products

Tier 1 Reefing Inc

Kalkwasser

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$8.50

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shop is the next step on our mission to make commerce better for everyone.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

Description

Kalkwasser - Calcium Hydroxide- Ca(OH)

Using Kalkwasser is an easy and inexpensive way to maintain Calcium, Alkalinity and pH in your reef system from one solution. It also has the added benefit of causing phosphate to fall out of solu...

Delivery & Returns

Tier 1 Reefing Inc

5 (29)

You might also like

Tier 1 Reefing Inc

Algae / Glass Scraper

Tier 1 Reefing Inc

DEFCON 1 (60mL)

(1)

Reef Pro

Reef Pro Complete Part B Alkalinity

(2)

Tier 1 Reefing Inc

Chaetomorpha Macroalgae

(2)

Tier 1 Reefing Inc

Phytoplankton (Nannochloropsis)

(3)

Aquarium Depot

Seachem Reef Kalkwasser - 500 g

Reef Pro

Reef Pro Zooper Food AB

(1)

KS100 Nilson Kalk Reactor - Reef Octopus

Top Shelf Aquatics

KS100 Nilson Kalk Reactor - Reef Octopus

Hydros Aquatics

Red Sea calcium 1000 ml

The daily dog walk edit

The daily dog walk edit

Bag holders, carry loops, and refills.

EcoTech Parts Store

Radion G5 Fan Replacement

EcoTech Parts Store

Radion XR15 G6 Blue

23% off

Tier 1 Reefing Inc

Krill

(1)

55% off

Tier 1 Reefing Inc

Nori Cage Feeder

Reef Pro

Reef Pro Nitrate

Tier 1 Reefing Inc

Filter Floss (26”x36”)

(1)

Avast Marine Works

4.9

(443)

Aquarium Depot

Seachem Reef Kalkwasser - 4 L

Reef Pro

WWC Afterparty

New Wave Aquaria

Kalkwasser (Calcium Hydroxide)

(1)

Nature Aquariums USA

Seachem Kalkwasser - 250 gr. - 8.8 fl. oz.

Hydros Aquatics

Reef pro part A 5 gallon ( calcium )

brightwell-aquatics-kalk-2

KensFish.com

Brightwell Aquatics Kalk+2

EcoTech Parts Store

XR15 Diffuser for G5/G6

NYAquatic

4.8

(331)

Tier 1 Reefing Inc

Red Mangrove (Rhizophora mangle)

Reef Pro

RR Pink Caddie

Tier 1 Reefing Inc

Nori Flakes

(4)

Magnetic Mangrove Holder for Aquariums (3 pk)

Hephium

Magnetic Mangrove Holder for Aquariums (3 pk)

Two Little Fishies Kalkwasser 1 LB

Premium Aquatics

Two Little Fishies Kalkwasser 1 LB

Tier 1 Reefing Inc

F2 Fertilizer (4oz)

Brightwell Aquatics Kalk+2 - Advanced Kalkwasser Supplement

Premium Aquatics

Brightwell Aquatics Kalk+2 - Advanced Kalkwasser Supplement 450g

Magnetic Kalkwasser Mixing Reactor - IceCap

Top Shelf Aquatics

Magnetic Kalkwasser Mixing Reactor - IceCap

(2)

Brightwell Aquatics Reef Code A - Balanced Calcium & Alkalinity System - Part A - 2 Liter

Premium Aquatics

Brightwell Aquatics Reef Code A - Balanced Calcium & Alkalinity System - Part A - 2 Liter

Brightwell Aquatics Calcion - Liquid Calcium Supplement for

Premium Aquatics

Brightwell Aquatics Calcion - Liquid Calcium Supplement for

Hydros Aquatics

Reef pro part A 32oz (calcium)

Tier 1 Reefing Inc

Kill Shot

Tier 1 Reefing Inc

Special Edition Phyto Bottle

(1)

Dog routine essentials

Dog routine essentials

Shop leashes, bowls, and lick mats.

Tier 1 Reefing Inc

RO & Saltwater

MN Aquatics

BRS Kalkwasser 2lb

Aquarium Depot

Brightwell Kalk+2 Advanced Kalkwasser Supplement w-Calc, Stron, Mag 450gm-15.9oz

Brightwell - Kalk+2 - Advanced Kalkwasser Supplement 450g - Whitlyn Aquatics

Whitlyn Aquatics

Brightwell - Kalk+2 - Advanced Kalkwasser Supplement 450g

Seachem Reef Kalkwasser - 1 KG

J&L Aquatics Ltd.

Seachem Reef Kalkwasser - 1 KG

Brightwell Direct

Kalk+2

EcoTech Parts Store

XR15 G3 Replacement Lens Frame

Barrier Reef Aquariums

Reef Endurance Calcium Chloride 2.5lb

Tier 1 Reefing Inc

Mangrove & Probe Holder

Tier 1 Reefing Inc

NP Plus

(3)

Reef Pro

Reef Pro Bio-EX No3 and Po4 Reducer

(4)

49% off

Tier 1 Reefing Inc

Halymenia Macroalgae

(3)

Aquarium Depot

Two Little Fishies Kalkwasser Reactor

Reef Pro

Reef Pro Zooper Food Part B

Hydros Aquatics

Kalk +2 100g

Puppy travel zones

Puppy travel zones

Playpens, liners, carriers, and travel bowls.

ESV Calcium Hydroxide Kalkwasser 3.5 lbs

Premium Aquatics

Esv Kalkwasser 3.5 Pounds

EcoTech Parts Store

XR15G5 to XR15G6 Blue Upgrade Kit

Blue Water Coral

Reef BluePrint Isol8:Ca(OH)2 Calcium Hydroxide - Kalkwasser (1000g)

Tier 1 Reefing Inc

Filter Sock 100 micron

(1)

Reef Pro

Reef Pro Complete Part A Calcium

(2)

Reef Pro

Reef Pro Zooper Food Part A

(1)

Tier 1 Reefing Inc

Nori Sheets

(4)

MN Aquatics

BRS Calcium Chloride 1-Gallon Mix

13% off

Reef Pro

Live Clean Chaetomorpha Algae 1 cup

(31)

Fauna Marin Kalkwasser 500g

Premium Aquatics

Fauna Marin Kalkwasser 500g

4-Part RCP - Lrg (160 gal)

Premium Aquatics

Red Sea 4-Part Complete Reef Care - Large Pack (160 gal)

Calcium Waterbox Aquariums

Waterbox Aquariums

Calcium

(2)

Aquarium Depot

Brightwell Calcion Concentrated Calcium Supplement 17oz

EcoTech Parts Store

Collar & coupling kit for L2

(1)