Algae Toxin Field Test
Screen for algal toxins at the shoreline in about twenty minutes.
Measures: Microcystins, Nodularins
Turnaround: Results on site, about twenty minutes from sample to reading.
Ships in 3–5 business days
$24.99

Toolbox · Field Tools
Field instruments used to belong to trained technicians and gear nobody wanted to calibrate. These are built for anyone who can stand on a dock. Not every question needs a lab. Some need an answer today, cheaply, and often enough to reveal a trend. This collection is your first response: tools that tell you whether something has changed, where to look next, and whether the expensive test is worth running. It's how a lake stays watched between the moments that matter.3 products
Who this aisle is for
Best for building a weekly habit and a long record.
3 products
Screen for algal toxins at the shoreline in about twenty minutes.
Measures: Microcystins, Nodularins
Turnaround: Results on site, about twenty minutes from sample to reading.
Ships in 3–5 business days
$24.99
The oldest measurement in limnology, and still one of the most useful.
Measures: Water clarity (Secchi depth)
Turnaround: Ships to your address within 3–5 business days of ordering.
$50
One click logs a timestamped, geotagged observation to your lake's portal. Phone stays in your bag.
Measures: Member observations (three press types set by your Lake Admin)
Turnaround: Ships after your order is confirmed. Instructions for connecting Lake Tag to your lake's portal arrive by email after purchase.
$150
Questions about this aisle
The questions we get most often on this shelf. If yours isn't here, ask — we would rather answer first than sell you the wrong thing.

Field testing & lake health