Size Your Replacement Bulb
Step 1: Identify your bulb's base to verify that it matches the picture.
Step 2: Locate your bulbs wattage.
Step 3: Measure your bulb end to end (including pins) to confirm which replacement bulb is correct for you.
The 2G11 Base 18 Watt UV Bulb is used as a replacement for the following:
TetraPond® GreenFree® UV Clarifier.
Here are the replacement parts for 18 Watt UV Bulb - 8.75" Long.
The first step towards effectively treating any pond weed is proper identification. 18 Watt UV Bulb - 8.75" Long is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.