Expert Verified Updated: March 2026

D.E. Filter Grid Area Calculator

Calculate the total square footage of your D.E. filter grids for proper dosing.

Quick Conclusion
The D.E. Filter Grid Area Calculator provides instant dose calculations for pool maintenance, helping you maintain perfect water balance and extend equipment life.

Technical Comparison

Tank SizeGPM FlowDE Charge (Lbs)
36 Sq Ft72 GPM3.6 Lbs
48 Sq Ft96 GPM4.8 Lbs
60 Sq Ft120 GPM6.0 Lbs

Fine Filtration

DE filters are the most effective, trapping particles down to 3-5 microns, but they require the most maintenance.

Actionable Steps

Dosing DE Powder

DE filters require 'bumping' and refreshing with powder after every backwash. Usually 1 lb of DE per 10 sq ft of filter area.

⚠️

Safety Warning: Never run a DE filter without powder, as it will quickly ruin the expensive grids.

Pro-Tip

Never run a DE filter without powder, as it will quickly ruin the expensive grids. After backwashing, you usually only need 80% of a full pre-coat charge.

Frequently Asked Questions

How much DE?

1 lb per 10 sq ft is the standard rule of thumb.

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