Domain Arrivals
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Featured in Domain Arrivals · 2026-08-15

ReefDose, the label-led reef dosing calculator

reefdose.com ↗ · Useful Tools · score 82.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

ReefDose turns a reef supplement label, tank volume, test result, and chosen target into a transparent dose card.

Why it surfaced

Its arithmetic stays visible: a worked 200-litre correction scales the label rule, applies a 6 ml manufacturer cap, and splits the result into three steps. The tool also states what it will not do—choose products, recommend targets, diagnose tanks, or invent schedules—which gives this narrow calculator unusually clear boundaries.

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The Two-Tonne Temperature Problem

August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.

This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.

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