Reef Frags is the home for reef keepers: track your tank, build your coral collection, and trade aquacultured frags with people as obsessed as you are.
In stages, and the first ones are already done: the reef calculators, the Coral Bluebook, the Tank Journal and the Coral Dex are live right now, free, and with nothing to sign up for. What is left is the half that needs other people in it: the Frag Market, where growers list their own corals under their own name. Everyone on the list hears about it first.
A reference for 65 named coral morphs: what each one actually is under the trade name, how to tell it from the coral that gets sold as it, and what it is really priced at. It is free, needs no account, and nothing in it is for sale. Prices come in two kinds that are never mixed. Asking prices are read from shops' own catalogues and count shops rather than listings, so no single seller can set a range, and none publishes under 3 shops. Verified sales are entered by hand from dated records anyone can check, and none publishes under 3 of them. A morph with too little of either says so instead of showing a number.
Free, no account, and they work the moment the page opens. Alkalinity, calcium and magnesium dosing is worked from your tank's real water volume rather than its label size, and the salinity card converts between specific gravity and parts per thousand while naming the temperature a hydrometer is calibrated to, which is where most bad readings start. Every constant is derived from molar masses in a comment beside it rather than copied off another calculator, because this is the one part of the site that can kill an animal if it is wrong. There are two separate safety rails: a change bigger than one day's safe swing, 1 dKH for alkalinity, is split across as many days as it needs rather than handed over as one dose, and a target outside the range anything could survive at is refused outright rather than politely planned for.
In your own browser. Both work with no account, and nothing you log leaves the device unless you turn sync on yourself. The site does count anonymous page views, without cookies and without tying anything to a person, and that is the whole of what it sends. Your log exports to a spreadsheet whenever you want it, so leaving is a download rather than a support ticket. On a shared computer, each signed-in account keeps its own separate dataset and a guest keeps another, so one person's log can never upload into someone else's account. Signing out deliberately clears nothing: the browser's copy is the original and it stays.
It joins the two halves the site already holds. A coral you add carries its care requirements from the Bluebook without anyone typing them, and it carries the parameters your own tank actually ran during the months you kept it. That answers the question a list cannot: not what you own, but what conditions this animal has really been living in. Losses are recorded the same way as everything else, with a date and a cause, because a collection that only remembers what survived teaches nobody anything.
The seller's live-arrival terms will apply, and making those terms worth something is the entire point of the Market. Every listing will show its terms before you buy rather than after, and payment is intended to settle only once you confirm the animal arrived alive. The minimum those terms have to meet gets published in writing before the Market opens, so you can read it before you ever spend anything.
Origin will be a required field on every listing, not a claim a seller can leave vague. Aquacultured is what this favours and why: tank-grown frags travel better, adapt faster, and take nothing off a reef, and import restrictions on stony coral keep tightening besides. Selling wild-collected stock as aquacultured is the specific thing the listing rules exist to catch.
No, and that is deliberate. Reef Frags is the venue: growers list their own corals under their own name, with their photos, the parameters those corals were grown under, and their own terms. A frag does occasionally come off the founder's display tank, and when it does the listing says so exactly like anyone else's. Running a price reference and a marketplace at the same time only works if we are not also the biggest seller on it.
Sellers ship, and the Market's job is to make them tell you how before you pay: carrier, cut-off day, seasonal heat or cold packs, and what happens when your local forecast is genuinely dangerous. Shipping livestock early in the week so a box never sits in a depot over a weekend will be a listing requirement rather than a favour, and holding an animal back beats gambling with it.
Honestly, and without pretending to more certainty than exists. A coral only carries a designer name where it traces to a documented mother colony; where it does not, it gets labelled a grow-out rather than dressed up. Nobody can verify lineage at the hobbyist level, because it runs on the seller's word, so every listing will name whose word it is. The Bluebook lists the same morphs without claiming anyone's particular frag is one of them.
WYSIWYG will be the rule: the photo is the exact piece that ships, taken by the seller, under stated lighting, not a stock shot of the mother colony. White balance and brightness are fair; anything past that is not. Blue-light photos that do not survive contact with your own tank help nobody and are the fastest way for a seller to lose standing here.
Sellers set their own prices. What Reef Frags adds is a way to tell whether a price is normal: the Coral Bluebook publishes what a morph has actually gone for, per head, from dated records anyone can check, and it publishes nothing at all until three of them exist. A marketplace with a price reference attached is one where you can look the number up instead of guessing at it.
No. The Tank Journal and the Coral Dex are open right now and need no account, so they keep your data in your own browser. They exist because a frag is worth more when it arrives with its parameters and lineage attached, but you will always be able to just buy coral.