Easy Steps for Pool Filter Sight Glass Replacement

You've probably noticed that tiny clear cylinder on the side of your multiport valve, and if it's cracked or leaking, a pool filter sight glass replacement is likely on your immediate to-do list. It's one of those small parts that doesn't seem like a big deal until it starts spraying water all over your equipment pad or gets so cloudy that you can't even tell if your backwash water is actually clean. Replacing it is luckily one of the easiest DIY tasks you can tackle, and it'll save you a chunk of change compared to calling out a pool tech for a five-minute job. ...

February 27, 2026 · 7 min · Everett Tamsin