Neo-Helios XP-1200 Flat LED Light (64W) – Ultra-Slim Full Spectrum Aquarium Light

The Neo-Helios XP-1200 is a 64W ultra-slim full-spectrum LED light for medium to large planted aquariums, delivering high-output, even illumination that drives strong plant growth and shows fish and hardscape in vivid colour. It is the larger sibling of the XP-300, built for tanks that need serious light across a wider span. The sleek flat aluminium housing sits low over the tank on adjustable feet for a clean, modern look.

Why choose the Neo-Helios XP-1200?

• High 64W full-spectrum output for medium to large planted tanks, including more demanding plants.
• Even, deep light penetration across the tank length for uniform growth.
• Vivid colour rendering that makes greens, reds and fish colours stand out.
• Ultra-slim, premium build that looks at home on planted aquascapes.
• Adjustable mounting to fit a range of tank widths.

Specifications

Which tanks is it best for?

The XP-1200 is built for medium to large planted tanks (roughly 4ft and up) where you need strong, even light across a wider span. With its high output it can support demanding plants — carpets and red plants — when paired with CO2 and proper dosing. For sizing help see what size aquarium light do I need.

How to use it

Mount the light over the tank and run it 7–8 hours a day for a low-tech planted tank, or up to 8–10 hours for a high-tech tank with CO2, on a timer. Start lower, watch your plants and algae, and increase only as needed. Always include a dark night period and keep the tank out of direct sun. See how many hours should aquarium lights be on.

Frequently asked questions

What size tank is the XP-1200 for?

Medium to large planted aquariums, roughly 4 ft and up. For smaller tanks the XP-600 is a better fit.

Is it strong enough for carpeting plants?

Yes, its high output suits demanding plants and carpets when combined with CO2 and a regular dosing routine.

How many hours should I run it?

7–8 hours for low-tech tanks, up to 8–10 hours with CO2. Always use a timer and a dark night period.

Will such a strong light cause algae?

It can if the light outpaces your CO2 and nutrients, or runs too long. Balance light with dosing and cap the photoperiod.

Does it render fish and plant colour well?

Yes. The full-spectrum output gives vivid greens, reds and fish colours for a natural, show-quality look.

Planning a planted tank? Read the planted aquarium lighting guide and the full aquarium light guide, and dial in fertiliser dosing to match the light.