Lampu Akuarium LED: Choosing an Aquarium Light and How Many Hours to Run It

A good lampu akuarium LED should be about the same length as your tank (60 cm light for a 2 kaki tank, 90 cm for 3 kaki), have a colour mix that suits what you keep, and run for about 6–8 hours a day on a timer. For fish-only tanks, almost any decent LED works. Planted tanks need stronger, full-spectrum lights. Most algae problems in Malaysian tanks come from lights left on too long, or sunlight hitting the tank, not from the light itself. This guide covers sizes, colours, hours and heat.

Why Choose LED?

LEDs have replaced fluorescent tubes in most aquariums because they:

• Use less electricity, which matters with lights on every day
• Run cooler than old fluorescent or metal halide lights, though not cold
• Last longer (often several years)
• Allow colour control, dimming and built-in timers on many models
• Are slim, sitting on the rim or on brackets

FishyHub lists LED fixtures from Malaysian sellers under LED Lamps.

Lampu Akuarium LED Size by Tank Kaki

Tank	Dimensions (approx.)	Light length	Typical use
1 kaki	30 cm	20–30 cm clip-on or mini LED	Betta, shrimp, nano
1.5 kaki	45 cm	40–45 cm	Small community
2 kaki	60 cm	50–60 cm	Beginner community, light plants
3 kaki	90 cm	80–90 cm	Community, angelfish, planted
4 kaki	120 cm	100–120 cm, or two units	Arowana, big community, planted
5–6 kaki	150–180 cm	Two or more units	Arowana and display tanks

Many LED bars have extendable brackets, so check the minimum and maximum bracket length against your tank's outer width, including the glass. For tanks deeper than about 50 cm, choose a brighter light, because light weakens as it passes through water.

For tank dimensions and volumes, see our aquarium tank size guide.

White, RGB or Blue: Which Colour?

Light type	Look	Best for
White (daylight, 6,500–8,000K)	Natural, bright	General fish tanks, plants
White + blue	Crisp, cool look	Community tanks, cichlids
RGB / full spectrum	Rich reds and greens, "pop" colours	Planted tanks, colourful fish
Red-enhanced / arowana lights	Warm, red-boosting tone	Red arowana, goldfish, koi-style colour
Blue only (moonlight)	Dim blue glow	Night viewing only; not for plants

Points to remember:

• Kelvin (K) describes colour tone. Around 6,500K looks like daylight, higher values look bluer.
• RGB lights make fish colours richer but can look odd if set too purple. Adjustable models let you tone it down.
• Plants grow best under full-spectrum or RGB lights. If you have live plants, read our planted tank lighting guide.

Lampu Akuarium Berapa Jam? (Photoperiod)

Tank type	Hours per day
Fish only, no live plants	6–8 hours (just for viewing)
Low-tech planted (no CO2)	6–7 hours
High-tech planted (CO2 + fertiliser)	7–8 hours
New tank (first 4–6 weeks)	5–6 hours, raise slowly
Algae outbreak	Cut to 5–6 hours while fixing the cause

Fish need darkness to rest. Leaving lights on 12 hours or more stresses fish and almost guarantees algae.

Use a timer

An automatic timer is the single best accessory for an aquarium light. It keeps the photoperiod the same every day, even when you go balik kampung. Many LED models have built-in timers, and plug-in timers are cheap. Look under Lighting Accessories.

Tip: set the lights to come on when you're home, for example 2 pm to 9 pm, so you actually see the tank.

Avoiding Algae

Algae needs light plus nutrients. Common causes in Malaysia:

1. Direct sunlight from a window, which is far stronger than any aquarium light
2. Lights on too long, or switched on and off irregularly
3. Too-strong lights for a fish-only tank
4. Excess nutrients from overfeeding and infrequent water changes

What to do:

• Move the tank out of direct sun, or close the curtains on that side.
• Use a timer and cut to 6 hours.
• Do regular water changes, and feed less.
• Add live plants or fast-growing floating plants to compete for nutrients.
• Add algae-eating snails or fish suited to your tank.

Full guide: how to remove algae in an aquarium.

Heat From Lights in Malaysian Tanks

LEDs are cooler than old lights, but a powerful fixture sitting on a closed lid can still warm a tank by 1–2°C. In a room already at 30°C, that matters.

• Raise the light on legs or brackets so air can circulate.
• Leave the lid partly open, or use a mesh cover.
• Run the photoperiod in the evening, when the room is cooler.
• On very hot days, shorten the light period.

More cooling ideas in our chiller and fan guide.

Safety and Moisture

• Choose lights with a waterproof rating (e.g. IP67 or IP68) if they sit near water.
• Keep the power adaptor away from splashes, and make a drip loop in the cable so water can't run down into the socket.
• Wipe salt or calcium crust off the light cover regularly, or it dims the light.
• If a light flickers or shows water inside, unplug it and replace it.

Choosing a Light: Checklist

1. Tank length and depth: match the light and bracket size.
2. Live plants or not: fish-only can use basic white; plants need full spectrum.
3. Fish colour: RGB or red-enhanced lights for arowana and goldfish.
4. Control: built-in timer, dimmer or app control.
5. Waterproofing and warranty: check each listing, and ask the seller.
6. Real photos: listings showing the light on a tank help you judge brightness and colour.

Frequently Asked Questions

Lampu akuarium perlu buka berapa jam sehari?

Untuk akuarium ikan sahaja, 6–8 jam sehari sudah cukup. Untuk akuarium dengan pokok hidup, 6–8 jam juga, bergantung pada kekuatan lampu. Jangan buka lampu lebih 10 jam kerana lumut akan cepat tumbuh dan ikan perlukan waktu gelap untuk berehat.

Lampu akuarium saiz berapa untuk tangki 2 kaki?

Untuk akuarium 2 kaki (60 cm), pilih lampu LED sepanjang 50–60 cm atau yang braketnya boleh dipanjangkan hingga 60 cm. Ukur lebar luar tangki termasuk kaca sebelum membeli.

Does an aquarium light make algae grow?

Light helps algae grow, but the main causes are too many hours, sunlight and excess nutrients. A timer and regular water changes fix most cases.

Is a blue light bad for fish at night?

Dim blue "moonlight" for a short time is fine for viewing, but fish still need real darkness overnight. Don't leave it on all night.

Do I need a special light for live plants?

Yes, for most plants. A full-spectrum or RGB LED designed for plants gives better growth than a basic fish-viewing light.

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Light up your tank with LED aquarium lamps and timers and lighting accessories from sellers across Malaysia on FishyHub. Compare lengths, colours and RM prices, and ask the seller if a light fits your tank.