Every crash starts as a drift. The data exists days before the glass shows it — your memory just isn’t a logbook. TankNote is.
No app yet — we’re in sea trials. Manifest signers board first: early access, launch pricing, a say in which kits we support.
Alkalinity slides 0.1 dKH a day for two weeks. Nothing looks wrong. Then the Acropora tips pale, the tissue recedes, and you’re reading old test strips trying to reconstruct what happened.
A logbook would have caught it on day three. The data existed; the record didn’t.
TankNote keeps the trace — so you act on the sag, not the slide.
Number-pad-fast entry for every parameter you test — dKH, calcium, magnesium, nitrate, phosphate, salinity. Type the reading, it’s logged. Friction is the killer feature: if it takes longer than seconds, it stops happening.
Every parameter drawn as a continuous strip-chart, per tank. The shape of the line is the diagnosis — flat is health, a sag is a warning you can read at a glance.
TankNote watches the slope. When a parameter starts trending out of your target band, it flags the sag — before it becomes a slide. Day 9, not day 19.
Water-change reminders and a photo record of the reef growing in — the romance alongside the rigor. A slice of the reef, kept on the record.
Less than a single test-kit refill — for the record that makes the refills worth it.
In development — we’re in sea trials now. There’s no app to download yet. Manifest signers board first: you’ll get early access before it’s public, and you’ll help shape what ships.
Early access, launch pricing locked in, and a voice in which parameters and test kits we support first. No spam, no charge — just a signal when sea trials end.
No — reef, planted, brackish, fish room. Nitrate, GH/KH, CO₂, salinity, par. If you test it, you can log it. Fish-room owners get per-tank histories and water-change schedules.
Yours. Exportable, never sold. The record you keep is the record you own.
Ten seconds a test. A year of trace. Sign the manifest and board before the rest of the crew.