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My D.E. filter is running at high pressures and has a slow flow of water returning back to the pool

The D.E. filter is loaded with too much debris or algae and needs backwashing or regeneration. If this problem persists and you notice the filter gauge pressure rising from 7 - 10 psi above your beginning pressure, you need to regenerate your filter. Refer to your Owner’s Guide for further instructions or contact Blue Haven Pools & Spas.

Your pump output might exceed the design flow rate of the filter. Make sure the pump is correctly sized for your filter.

If there is algae in the pool, super chlorinate, backwash or bump/drain and recharge as needed. Make sure you are properly backwashing on your vertical grid filter. Refer to your Owner’s Manuals for instructions.

My D.E. filter short cycles even after I backwash or regenerate and recharge

The filter elements may be clogged because of an accumulation of chemical deposits. Clogging is accelerated if chemicals are fed through the skimmer, operating your filter too long without D.E. after starting the pump, or operating the filter without D.E. D.E. must be added as soon as the filter is full of water, and the pump is putting out a steady stream of water. Refer to your Owner’s Guide for the amount of D.E. your filter requires.

Biguanide based sanitizers (i.e. Baquacil, SoftSwim) can cause short cycling.

My D.E. filter is leaking back into the pool

Be sure that the suspected material on the pool floor is actually D.E. Pollen, chemical residue and plaster dust often look like D.E.

You may have a tear in your filter elements, replace if necessary. Make sure that you assemble the internal parts properly!

Check for air leaks, as this will cause the system to leak D.E. back into the pool. If there are air leaks, install a check valve between the pump and the filter valve.

Read the rest of the article at Blue Haven Pools and Spas Supplies Direct.

• Hayward In-Ground Pool Cleaner Troubleshooting Guide
• Swimming Pool Filters and Pumps
• ‘Lil Shark Above-Ground Pool Cleaner