Download one of our marine aquarium guides
Water Parameter Guide
Check the ideal parameters for a healthy, well-balanced aquarium environment. Includes recommendations for salinity, temperature, and much more.
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![Water Parameter Guide](https://www.rockncritters.co.uk/images/guide-page/dfaf6dd2-af57-462a-8827-bbd89f430b3f/water-parameter-guide.png)
Fish Compatibility
Not sure which fish can live together? Use our handy reference chart to check the compatibility of more than 30 different species!
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![Fish Compatibility](https://www.rockncritters.co.uk/images/guide-page/89a9c281-251a-46c6-81ec-6a153c25c9c8/fish-compatibility.png)
Recommended Lighting Schedule
Lighting is very important in a marine ecosystem. Check our recommended lighting schedule to find out how much light your aquarium needs.
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![Recommended Lighting Schedule](https://www.rockncritters.co.uk/images/guide-page/e0099834-2c65-4678-bb97-f80600b1ad68/recommended-lighting-schedule.png)
Use our helpful calculators
Live Rock Calculator
Enter your tank’s water volume (in litres) to find out how much live rock you should put in your aquarium.
Calculate
![Live Rock Calculator](https://www.rockncritters.co.uk/dist/rnc/assets/img/live-rock-calculator.png)
Water Volume Calculator
Enter the length, width and height of your tank (in centimetres) to find out how much water it will hold.
Calculate
![Fish Compatibility](https://www.rockncritters.co.uk/dist/rnc/assets/img/water-calculator.png)