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hygger 18W 24/7 LED

The cheapest useful planted light: a full spectrum fixture with a built-in timer, 24/7 modes and extendable brackets. Fine for low-to-medium light plants on a small-to-mid tank, at a rock-bottom price.

hygger 18W 24/7 LED
90/ 100 T&T score
Ranked 6th of 6 lights
Owner rating4.6★ (918)
Best price today$38.99
Tierbudget
Affiliate link · never affects rank
Score breakdown
Light Output & Spectrum95
Plant Growth Capability95
Build & Controls96
Owner Satisfaction80
Value87
What we like
  • +Timer built in, with sunrise-daylight-moonlight 24/7 modes that ramp up and a DIY mode
  • +Full spectrum with adjustable brightness — bright enough for low and medium light plants
  • +Extendable bracket and 7 colours; dimmable for algae control
  • +The lowest price here — a great first planted light
Watch out for
  • −Small (18 W) — sized for a nano to mid tank, not a big one
  • −Not water resistant, and the on-unit menu takes learning
Specifications
PARLow-medium
SpectrumFull spectrum (7 colours)
Colour TemperatureAdjustable
Coverage~18-24 in (extendable)
Light LevelLow to medium
Depth RatingShallow tanks
PAR at DepthLow
ControllerOn-unit timer
MountingExtendable bracket
IP RatingNot water resistant
Dimensions18 W, extendable
The exact product

This is the hygger 18W 24/7 LED, the cheapest useful planted light here: a full-spectrum fixture with a built-in timer, sunrise-daylight-moonlight 24/7 modes, a DIY mode and extendable brackets. It suits low-to-medium light plants on a small-to-mid tank and is not water resistant.

Best for
  • A first planted light on a nano-to-mid tank
  • Keepers who want a built-in timer at the lowest price
  • Low-to-medium light plants
Not for
  • Large tanks, since 18W is small
  • High-light carpets
  • Open-top tanks where splash matters, since it is not water resistant
What we can and can't verify

We separate what the maker claims from what independent sources confirm, what owners report, and where we are drawing an inference. We do not bench-test products.

The manufacturer states
  • Full spectrum with 7 colours and adjustable brightness
  • Built-in timer with sunrise-daylight-moonlight 24/7 modes and DIY mode
  • Extendable bracket; dimmable; 18W
Independently verifiable
  • Sized for nano to mid tanks, not large ones
  • Not water resistant; on-unit menu
Owners consistently report
  • Well rated as a great-value first planted light
Our reading of the evidence
  • The budget entry to planted lighting: a real built-in timer and 24/7 modes at a rock-bottom price, sized for smaller tanks
What it costs to own

The lowest upfront cost here, low running cost at 18W, no bulbs to replace, and no separate timer needed. Keep it clear of splash since it is not water resistant.

How it fails, and what to watch
  • Too small for a large tank
  • Not water resistant
  • On-unit menu takes some learning; algae if overdriven on a low-tech tank
Limits of this review

We do not measure PAR; figures are the manufacturer's specification and paraphrased owner reports. Plant results depend on CO2, nutrients and stocking, which are beyond a light's specification. We give gear and method guidance only, not livestock or disease advice; route fish-health questions to a veterinarian or an established authority.

Common questions
What tank size does 18W suit?

A nano to mid tank. For a larger tank, step up to a bigger fixture such as the 30 to 36 inch hygger or a NICREW.

Will it grow plants?

It grows the plant levels stated in its spec. Too much light without matching CO2 and nutrients drives algae, so dim it if you see algae rather than adding more light.

Is it water resistant?

Check the spec above; several of these fixtures are not water resistant, so mount them clear of splash and condensation.