How the links work, and what they pay
Some links here earn a commission if you buy. Each one says so at the link itself, and no manufacturer pays for placement or coverage.
Last updated
The current state
Commercial links are live, through the Amazon Associates programme. Every one of them carries the words "Paid link. I earn a commission if you buy." in the same block as the link, not at the bottom of the page and not behind another page, and the build fails if any commercial link ships without it.
There are six, and this is all of them: the open-line Hayward part number on its own model page, a salt test kit on the three pages that tell you to measure your water, and chemical splash goggles plus a cell stand on the cleaning guide. Each one goes to a search for that kind of product rather than to a single item, because naming one product is a recommendation this site has not verified, and a category is what the page has already argued you need.
The rules, when links exist
A link appears only next to a decision that has already been resolved. It never appears inside a diagnosis, because somebody working out whether their cell is dead has not made a decision yet and does not need a shop.
The disclosure sits in the same block as the link, so you can see both without scrolling. One disclosure at the bottom of a page does not cover a link three screens above it, which is what the Federal Trade Commission means by clear and conspicuous.
No manufacturer pays for coverage, placement, or a better verdict, and none has been offered the chance to. If that ever changes it will be stated on the page it affects, in the same sentence as the finding.
What will never carry a commercial link
Pool acid. It is the one product in this category that can injure somebody, the commission would be pennies, and earning on the hazard while giving instructions for handling it is a worse position than simply publishing the instructions.
Nothing on a page that is still working out what is wrong, either. A link belongs after the decision, not inside it.
Prices
Prices here are published as a dated range across channels and never as a live retailer price, so a price you read is a price somebody checked on a stated day. Where a range is older than its freshness window it does not render at all rather than quietly ageing on the page.
What the site collects, and what sets a cookie, and how a number gets published.