AllPondSolutions 13W PLS UV電球 / 2ピンランプ - 池・水槽用

I noticed my pond water clarity dropping even though the old bulb still lit up, so swapped in this 13w PLS UV lamp and the green water cleared within three days.

Replaced the old bulb on my filter and the pond clarity improved noticeably within two days. It's good to know the output drops before it stops glowing, so the scheduled replacement makes perfect sense.

I noticed a huge difference in water clarity within just two days of swapping in this 13w PLS bulb, even though the old one still seemed to glow fine. The scheduled replacement every 7,000 hours makes a lot more sense now—it's a small price to keep the pond crystal clear.