1. What is the Sand Filter Calculation?

The Gravelmaster sand filter calculation determines the amount of sand needed for a sand filter based on the volume of the filter and standard sand density (1600 kg/m³).

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Volume — The capacity of the sand filter in cubic meters
• 1600 kg/m³ — Standard density of filter sand

Explanation: The calculation converts volume to mass using the known density of filter sand.

3. Importance of Accurate Sand Calculation

Details: Proper sand quantity is crucial for effective filtration. Too little sand reduces filtration efficiency, while too much can cause system overload.

4. Using the Calculator

Tips: Enter the volume of your sand filter in cubic meters. The volume must be a positive number.

5. Frequently Asked Questions (FAQ)

Q1: What type of sand is used in filters?
A: Filter sand is specially graded silica sand with particle sizes between 0.4-0.8 mm.

Q2: Does sand density vary?
A: Standard filter sand has a density of ~1600 kg/m³, but always check manufacturer specifications.

Q3: How often should sand be replaced?
A: Typically every 3-5 years, or when channels form and filtration efficiency drops.

Q4: Can I use this for pool filters?
A: Yes, the same calculation applies to pool sand filters.

Q5: What if my filter dimensions are in feet?
A: Convert to cubic meters first (1 ft³ = 0.0283 m³) before using this calculator.