Saltwater Aquarium Master Keeper — Interactive Digital Tracker

One system for your saltwater aquariums, reef chemistry, livestock, corals, dosing, maintenance, equipment, and more.

The HabitatCraft Saltwater Aquarium Master Keeper is a downloadable, local-first tracking system built for marine aquarium keepers — from a single saltwater tank to multi-tank reef systems, frag tanks, quarantine setups, and growing coral collections. Keep the records that normally end up scattered across notebooks, spreadsheets, test-kit apps, calendars, and notes in one organized system.

Manage Your Marine Systems

Build and organize records for:

• Display reefs, FOWLR aquariums, frag tanks, and nano/pico reefs
• Quarantine, hospital, and observation tanks
• Sumps, refugiums, and connected multi-tank systems
• Tank volume, actual water volume, salt mix, substrate, rock, and setup information

Track Reef & Saltwater Parameters

Keep a historical record of your water chemistry, including:

• Temperature, salinity / specific gravity, pH
• Alkalinity, calcium, magnesium
• Nitrate, phosphate, ammonia, nitrite
• Potassium, iodine, and custom parameters
• ICP testing and flagged-element notes

See parameter tests alongside dosing, maintenance, livestock, and other events in your reef timeline.

Fish & Invertebrate Records

Track your marine livestock with records for:

• Species and scientific name, individual names or IDs
• Current aquarium, acquisition date, source, and cost
• Size, sex notes, and feeding information
• Quarantine and observation status
• Health notes, tank transfers, sale, rehoming, or loss records

Coral Collection Tracking

Manage individual corals, colonies, and frags with:

• Species and coral ID, frag or colony status
• Tank and placement, reef zone, rack, and position
• PAR, flow, color, and condition
• Polyp and tissue observations, feeding, dip and pest history
• Growth observations and parent coral records
• Acquisition source and cost
• Grow-out, availability, reservation, sale, and trade status

Dosing

Keep a record of what goes into your reef:

• Dosing product, parameter affected, amount and unit
• Manual or automated dosing and dosing schedule
• Container amount remaining, daily usage, and estimated remaining supply
• Reason, adjustments, and observations

Maintenance & Equipment

Record recurring reef maintenance including water changes, skimmer cleaning, filter sock and floss changes, return pump maintenance, powerhead and wavemaker cleaning, ATO maintenance, RO/DI filter and resin replacement, probe calibration, dosing pump calibration, carbon and media replacement, refugium maintenance, and lighting maintenance.

Maintain equipment records for pumps, skimmers, heaters, controllers, dosers, lighting, UV sterilizers, reactors, RO/DI systems, chillers, probes, and more.

Health, Quarantine & Coral Intake

Keep important records together for:

• Fish quarantine and health observations
• Coral and invertebrate intake, coral dips, pests and findings
• Treatments, medication or dip products, dosage and concentration notes
• Treatment dates, clearance dates, outcomes, and observations

Coral Propagation

Track your propagation projects from parent colony to frag:

• Parent coral, fragging date, number of frags, batch or event ID
• Fragging method, dip or treatment, grow-out tank
• Propagation costs, grow-out, sale, and trade notes

Inventory, Money & Tasks

The Master Keeper also includes:

• Salt, dosing, test reagent, food, filter media, RO/DI, medication, and coral dip inventory
• Equipment parts, low-stock tracking, and expiration dates
• Expenses, livestock and frag sales, trades, and other income
• Due and overdue tasks and recurring maintenance schedules
• Unified reef timeline and emergency/sitter export
• CSV exports and full JSON backup and restore

Your Records Stay With You

The Saltwater Aquarium Master Keeper runs locally in your web browser. No account required. No subscription. Your working records are stored locally on your device, and the included backup system lets you download a complete copy of your data for safekeeping or transfer to another device.

What's Included

• Saltwater Aquarium Master Keeper HTML application
• Quick Start PDF
• README / setup instructions

Download the ZIP, extract the files, open the Master Keeper in a modern browser, and start tracking your marine system.

$17.99 — Instant Digital Download

Digital product only. No physical item will be shipped. HabitatCraft Master Keeper tools are designed for organization and record keeping. They do not diagnose disease, interpret test results, prescribe treatment, or replace appropriate professional care.