How to open back wash of dual media filter,What is open backwash|ACF,MGF&Dual media filters backwash

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[@AbhishekYadav-sc2bg]

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[@radheykrishna8702]

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[@rudraviralboy2717]

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[@lovestar3675]

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[@ramkishanyadav8300]

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[@aytechnicalpointyt6850]

Noted Sir

[@vikashkumar-tj9nd]

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[@royalchandan132]

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[@aytechnicalpointyt6850]

Thank🙏