TankWiseby Simply Submerged AquaticsBuild your tank
Freshwater records, made clearer

Know your water.
Understand your tank.

TankWise brings water results, tank details, and saved livestock into one clear freshwater record—built alongside practical tools from Simply Submerged Aquatics.

Build a tank profile ↗Meet the testing station
Freshwater focused Saved in your browser No account required
4:37● ● ●
TankWise tank overview showing saved water and livestock details
Saved water valueAmmonia · 0 ppm
Recorded
Saved livestock6 species · 32 fish

A better aquarium memory

Stop keeping the whole tank in your head.

01

See what changed

Turn isolated test results into a readable history for every freshwater tank.

02

Save the living context

Keep the tank size, water values, and current fish together in one profile.

03

Compare before you add

Place another fish beside the livestock already saved in your tank.

One connected record

From test tube to tank profile.

The physical tool and the digital record work together without adding extra steps.

Step 01

Test with less friction

Keep tubes upright and the reference card visible with the Simply Submerged Testing Station.

pH7.1In range
NH₃0Baseline
NO₃25Above range
Step 02

Record what you measured

Enter values manually and keep them with the tank where they belong.

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Candidate comparisonHarlequin Rasbora · x6
Step 03

Save fish, then compare

Use the fish already in your saved tank as the baseline for each new comparison.

Interactive companion

Build your tank, then compare.

Your tank and fish are stored only in this browser. Save once, then place other fish beside the profile you created.

Range comparison

Record the water values.

Each value is shown beside the app’s default freshwater reference range.

Default range comparison
1 outside default
pHIn default range
7.1

Inside the default community freshwater reference range.

AmmoniaAt baseline
0 ppm

Matches the default 0 ppm reference.

NitriteAt baseline
0 ppm

Matches the default 0 ppm reference.

NitrateAbove default
25 ppm

25 ppm recorded above the default range.

Tank recordMy planted tank

20 gallons · 0 livestock in the draft

Simply Submerged four-tube testing station in front of a planted aquarium
Designed for repeatable testingFour tubes. One clear view.
Simply Submerged AquaticsSimply Submerged
Aquatics

The physical half of the record

Made for the moment before you tap save.

The four-tube Testing Station gives liquid testing a stable home—holding the tubes and color card together while you compare and record.

  • 01
    Clear comparison

    Keep each tube aligned with the reference card.

  • 02
    Less juggling

    Use both hands for testing, reading, and logging.

  • 03
    A repeatable setup

    Use the same arrangement every time you test.

Get launch updates ↗

Built by an aquarist, for aquarists

A tool should make the hobby feel lighter.

Simply Submerged Aquatics began with practical objects for the aquarium bench. TankWise carries the same thinking into the record: useful, focused, and designed around what happens in front of a real tank.

Freshwater onlyFocused fields, not generic pet tracking.Local recordsYour app data stays on your device.Observation firstKeep the record beside your own judgment.
Four liquid test tubes aligned with a freshwater color chart
One tank record
Physical + digital

TankWise is taking shape

Keep your tank’s story together.

Join the launch list for TankWise Android testing and the Simply Submerged Testing Station.

Preview signup · no data is sent from this demo.