The teaching is free. The tools go further.
Every guide, the whole database, and the planner are free, forever. The Closed Loop Club adds the tools that do more work when you run more than one system. Nothing a beginner needs to build a first tank sits behind it.
Everything a first build needs.
- Every guide, pillar, and troubleshooting page
- The full compatibility database, searchable
- The build planner and the will-it-balance read
- The weekly newsletter
or $72 per year (pay for nine months, use twelve)
For keepers running more than one system.
- Saved planner builds, unlimited, with side-by-side compare
- The full multi-parameter compatibility filter set
- The build library: complete, parts-listed builds by type and size
- The members’ space
- Early access to new database records and planner features
The Club opens at launch. Join the newsletter and you will be first in.
Why the core is free
A beginner with one jar should never hit a paywall. The guides, the database, and the planner read stay free because the goal is more living systems that actually work, not fewer behind a gate. The Club is for the keeper on their fourth build who wants to save twelve planner runs and filter 41 plants by five parameters at once. Gear links are affiliate links, disclosed on every page that carries one, and they never change what we recommend. See the affiliate disclosure.
Be first into the Club.
Join the newsletter and you get the launch email before anyone else, plus a build breakdown a week until then.
No spam. Unsubscribe anytime.