Free guide for saltwater hobbyists

Save your reef tank from a silent crash with this free 7-point diagnostic check

A 4-minute Sunday morning check that catches what your test kit misses. Built by a 12-year reefer.

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« Caught a brewing crash before I lost $1200 in zoas. » — Ben K., 6 yr reefer

The 7-Point Reef Tank Health Check guide

What's inside the 7-point check

The 3 parameters most reefers ignore until coral starts dying
How to spot a brewing nitrate spike 5 days before it shows on tests
The "stability over perfection" rule that pros use every Sunday morning
A simple weekly checklist that takes 4 minutes to complete
Why traditional water change advice is wrong for established tanks

From the desk of

Marcus Chen

Reef diagnostic specialist · 12+ years reef tank experience

"After my 4th tank crash in 2014, I built this 7-point check. I run it every Sunday morning before coffee. Zero crashes since. It's not a system you'll find in any book — it took me 8 years and $40K in dead livestock to figure out."

Run the check before your next water change.

Send me the free check →