💧*Water Filtration* Rapid and slow sand filters is a classic frequently asked short note. You’ll definitely see it in your exams or viva! 👉 This Pearl breaks down: Key structural differences Filtration rates & layers Clear diagram-ready comparisons! _One table, one diagram, and this topic’s locked in. Let’s filter out the confusion!_ 🔹Revise the Pearl Slow Sand Filters on MARROW! - https://link.marrow.com/pearl/5a0161634f25447d0916f396 🔹Revise the Pearl Rapid Sand Filters on MARROW! - https://link.marrow.com/pearl/5a0167344f25447d0916f520