When I set the timer to 10 hours does the green indicator light keep flashing? Or does the flashing light mean the timer's not set?

Flashing means its working properly.

once the 12 hours are up and it cuts off, does it come back on in 12 hours? I am heading out of town soon and want to make sure.

After the power supply is restored, the default time of the light will change to 6 am, other settings remain unchanged, and then continue to run.

Can this fit on a normal rimmed aquarium?

According to the feedback and evaluation of other guests, the tanks with the rim may be loose. We have reported it to the factory and we are currently improving this problem. Other buyers' practice is to insert a piece of material, such as wood to hold the gap.

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Description

🌅 Illuminate your tank, elevate your vibe — 24/7 aquatic perfection!

FULLY CUSTOMIZABLE DIY MODE - Tailor your tank’s ambiance with 7 vibrant colors, 5 brightness levels, and flexible timer settings to match your mood or plant needs.
EYE FISH FRIENDLY LIGHTING - High CRI of 85 delivers natural color rendering without flicker, protecting your eyes and aquatic life from strain and discomfort.
EFFORTLESS CLIP ON INSTALLATION - Innovative clip bracket fits tanks up to 0.9 inches thick, with versatile horizontal or vertical mounting—no tools, no hassle.
PREMIUM HEAT DISSIPATION LONGEVITY - Thickened aluminum body ensures efficient cooling, extending LED lifespan beyond 50,000 hours for worry-free, long-term use.
SEAMLESS SUNRISE TO MOONLIGHT TRANSITION - Experience natural day rhythms with gradient orange, white, and blue lighting that mimics real sunlight and moonlight for your aquatic ecosystem.

The hygger Clip On 24/7 Lighting Aquarium LED Light is a 14W, full-spectrum LED fixture designed for 12-20 inch tanks. Featuring a natural sunrise-to-moonlight cycle, 7 color options, adjustable brightness, and timer settings, it offers customizable lighting that supports both fish and plant health. Its clip-on aluminum design ensures easy installation and superior heat dissipation, with a long-lasting LED lifespan of over 50,000 hours and a high color rendering index of 85 for vibrant, flicker-free illumination.

Specifications

Brand	hygger
Manufacturer	hygger
Part Number	HG990
Item Weight	1.39 pounds
Product Dimensions	12 x 3.9 x 3.5 inches
Item model number	HG990
Assembled Height	3.5 inches
Assembled Length	12 inches
Assembled Width	3.9 inches
Item Package Quantity	1
Style	Modern
Color	Black
Shape	Rectangular
Material	Aluminum
Finish types	Aluminum
Number of Lights	68
Included Components	User Manual
Voltage	20 Volts (DC)
Special Features	Color Changing, Full Spectrum, Timer
Shade Color	Clear
Shade Material	Aluminum
Power Source	Corded Electric
Switch Style	Controller
Switch Installation Type	Clip Mount
Batteries Included?	No
Batteries Required?	No
Type of Bulb	LED
Luminous Flux	817 Lumen
Wattage	14 watts
Wattage	14 Watts
Color Temperature	6500 Kelvin
Color Rendering Index (CRI)	85

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