Crystal Clear Water Starts Here

Select your size based on tank volume and desired sterilization strength

The IceCap In-Sump UV Sterilizer Series (18W, 27W, 40W) delivers powerful water clarification and sterilization for aquariums of all sizes.

Designed for in sump installation, these UV units help eliminate algae, reduce harmful bacteria, and improve overall water quality keeping your system clean, stable, and healthy.

What a UV Sterilizer Does

• Clears green water (free-floating algae)
• Reduces harmful bacteria and pathogens
• Improves water clarity
• Supports healthier fish and coral

A must have upgrade for serious aquarium filtration

Available Sizes

18 Watt

• Ideal for smaller systems
• Great for nano to mid-size tanks
• Perfect for water clarity and light sterilization

27 Watt (Most Popular)

• Best balance of power and efficiency
• Ideal for medium to large aquariums
• Excellent for both clarity and sterilization

40 Watt

• High output performance
• Designed for larger systems
• Maximum sterilization capability

Recommended Tank Coverage (General Guide)

• 18W: up to ~120 gallons
• 27W: up to ~200 gallons
• 40W: up to ~300+ gallons

Smaller tanks = stronger sterilization effect

Flow Rate Guidelines (IMPORTANT)

UV effectiveness depends on flow rate:

• Faster Flow: Water clarity / algae control
• Slower Flow: Bacteria and parasite reduction

Proper flow is key to getting the results you want

Important Notes

• Pump required (not included)
• Designed for in-sump use only
• Must be paired with correct flow rate for best performance

Perfect Pairings

Complete your filtration system:

• Feed pump (Varios recommended)
• Activated carbon (water polishing)
• Media reactor (advanced filtration control)

Turn your tank into a fully optimized system

Shipping

✔ Free shipping on orders over $100
✔ Secure packaging for safe delivery