Free downloads

🖨 Free Reef Printables

Free, useful keeper tools — print them, use them, and share them freely. No paywall, no catch. Every number is condensed from our sourced parameter chart and fact-checked guides.

• 🐠Reef Parameter Cheat-SheetOne-page quick-reference — target salinity, temperature, alkalinity, calcium, magnesium, nitrate and phosphate.
• 📋Parameter & Maintenance LogTrack salinity, temp, alk, Ca, Mg, nitrate, phosphate, dosing and water changes. Tape it by the tank.
• ✅New Reef Keeper ChecklistEverything to research, buy, set up and cycle BEFORE you add your first fish or coral.
• 🐠Livestock Care GuidesFull, fact-checked care guides for every fish, coral and invert in our directory.