Your reef shouldn't run on memory
Losing track of water changes, dosing, and cleanings is how a tank quietly slips—algae creeps in, corals stall, and you can't remember when you last kept up. Meta Reef's free reef maintenance log and water change tracker records every job and reads your own cadence, so each tank tells you at a glance whether it's good, due, or overdue.
- Water change · 15%12d ago
- Dosed alkalinity2d ago
- Cleaned skimmer5d ago
- Swapped filter floss8d ago
Water changes, tracked by volume
Record each water change with the gallons or percent you swapped. Every entry builds the history the tracker reads to know when your last change actually happened.
Status that updates itself
Instead of a hardcoded 7- or 14-day rule, your water-change status is derived from your own per-tank cadence and a grace window—so each tank shows good, due, or overdue on its own terms.
Quick-log at the tank
Fast entry tools log a water change or a maintenance task in a few taps, right at the tank, from any phone—no laptop, no spreadsheet on the stand.
A searchable service history
Every entry carries notes and a date, so your log becomes a searchable record of everything you have done to the tank—dosing tweaks, media swaps, equipment fixes, and all.
Everything you can log
One log covers the whole reef maintenance routine—not just water changes. Record each job as you do it and build a complete, searchable history of the tank.
Water changes
Record the volume or percent swapped, the salt mix, and any notes. This is what feeds your automatic water-change status for each tank.
Dosing
Two-part, calcium and alkalinity, trace elements, amino acids, or bacteria. Log what you added and how much to keep a paper trail behind your chemistry.
Filtration
Skimmer cleanings, filter sock or roller changes, and media swaps—GFO, carbon, and biopellets—so you know how long each has been running.
Equipment servicing
Return pump and powerhead cleanings, heater checks, impeller swaps, and light or controller maintenance. Keep a record of when each was last serviced.
Cleaning
Glass and viewing-panel cleaning, sand bed siphoning, and detritus blow-outs. The small routine jobs that keep a display looking its best.
How the water-change tracker works
Most apps count down a fixed 7- or 14-day timer. Meta Reef reads your own maintenance history instead, so the status reflects how you actually run each tank.
Set your cadence
Tell each tank how often you aim to change water and how much grace to allow. A weekly display and a monthly frag tank can each keep their own rhythm.
Log each change
Quick-log the volume or percent you swapped as you do it. Every entry updates the history the tracker reads, so it always knows your true last change.
See your status
Each tank shows good, due, or overdue—derived from your cadence and grace window, not a generic timer. Logging the next change resets it instantly.
Why a maintenance log beats memory
The single hardest question in reef keeping is often the simplest: when did I last do that? A skipped water change, a skimmer that has not been cleaned in a month, or GFO that ran out weeks ago rarely announces itself—until algae, cloudy water, or a stalled coral does it for you.
Writing every job down turns those invisible gaps into a clear timeline. Because your water-change status is derived from that history and your own cadence, you get an honest answer per tank instead of a guess—and because the log ties into your reminders, finishing a task clears it and schedules the next one automatically.
Over months the log becomes something more useful still: a searchable record of everything you have changed, dosed, cleaned, and serviced—the context you need when you want to understand why the tank is doing what it is doing.
See your consistency at a glance
Every logged job builds a history, so you can spot the weeks you slacked and the streaks you kept. Consistency is what keeps a reef stable—the honest picture of your routine, not a guess about it.
- Every job, dated and kept
- Spot gaps before they cost you
- Streaks you can actually see
Reef maintenance FAQ
How often should I do a water change on a reef tank?
There is no single right answer—it depends on stocking, feeding, and how you dose. Many reef keepers do a 10–20% water change weekly or every two weeks, while lightly stocked or heavily automated tanks go longer. What matters is a consistent cadence you actually keep. Meta Reef lets you set the cadence per tank and then tracks whether you are on schedule, so you never have to remember the rule yourself.
What maintenance does a reef tank need?
A typical reef routine includes regular water changes, dosing to replace calcium, alkalinity, magnesium and trace elements, cleaning the protein skimmer, swapping filter socks or roller media, replacing chemical media like GFO and carbon, servicing pumps and powerheads, and cleaning the glass. Meta Reef gives each of these its own log so nothing gets forgotten and you can see how long it has been since you last did it.
How do I keep track of when I last did a water change?
Log each water change as you do it and Meta Reef reads the most recent one to show your current status for that tank. Because the status is derived from your own history and cadence—not a generic timer—it tells you at a glance whether you are good, due, or overdue for this specific tank, and it updates the moment you log the next change.
Can I log dosing and equipment maintenance too?
Yes. The maintenance log is not just for water changes. You can record dosing (two-part, trace elements, and more), skimmer and filter cleanings, media swaps, pump and equipment servicing, and glass cleaning. Each entry can carry notes, so the log becomes a complete, searchable history of everything you have done to the tank.
Is the reef maintenance log free?
Yes. Logging maintenance and water changes across unlimited tanks is completely free, with no hardware to buy and nothing to wire up. You can create an account and log your first water change in a couple of minutes.
Does logging maintenance update my reminders?
It does. The maintenance log ties into your reminders and schedule—logging a task advances its next-due date automatically, so completing a job clears it from your list and sets up the next one. You track and get reminded in the same place, per tank.
Never lose track of a water change again
Free, unlimited tanks, no hardware required. Log your first water change in minutes and let the tracker do the remembering.