AQUA ULTRAVIOLET UV STERILIZER 40 WATT REPLACEMENT LAMP 33-3/8" A20040 Apex The alkalinity or carbonate hardness

The alkalinity or carbonate hardness should be kept as stable as possible requiring highly sensitive and accurate means for testing

The HI736 Checker® HC (Handheld Colorimeter) provides a simple

Start with 1 ml of each component per 4 gallons of aquarium capacity daily

you get up to date values for Alkalinity

Make Mixing Easier

AQUA ULTRAVIOLET UV STERILIZER 40 WATT REPLACEMENT LAMP 33-3/8" A20040 Apex The alkalinity or carbonate hardnessKeep your Aqua Ultraviolet UV Sterilizer running like new by replacing the UV Lamp! Any light, over time will start to degrade which means the spectrum will shift and also the amount of light (energy) output will become lower than a new bulb. We suggest changing the lamp out once every year, but it greatly depends on how long it is on. When changing out the lamp it is important to change the quartz sleeve as they can become cloudy and coated with