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Reef Directory Water parameters guide

Soren Dahl

Illustrated portrait of Soren Dahl
Keeps the reference tank

Soren has kept reef tanks for twelve years — from a 20-gallon nano that taught him every lesson the hard way to the 180-gallon mixed reef that now serves as this site's reference system.

Writes About
  • The build journey — planning, cycling, first fish
  • Hard-won budget advice
  • The mistakes that cost livestock

He started Reef Directory after watching the same five mistakes drain the same wallets on every forum thread: tanks stocked backwards, cycles rushed, parameters guessed. His rule for every page here: if we can't say it from a test kit reading or a care sheet, we say so plainly.

“Every guide I sign off starts with what it costs when it goes wrong. A reef is a promise you keep weekly — the site exists to make that promise cheaper to keep.”

Reach Soren through editor@reefdirectory.com — corrections are welcomed and credited.

Also writing here: Priya Nandakumar · Callum Reyes · About the site