Comparison · 2 picks
Best Grow Light for Herbs and Small Spaces (UK 2026)
Affiliate disclosure: we may earn a commission when you buy through links on this page, at no extra cost to you. Our verdicts are our own and are not influenced by compensation. As an Amazon Associate I earn from qualifying purchases.
Grow lights for a home fall into two useful shapes: panels that light a whole shelf, and bulbs that top up a pot or two in an existing fitting. Which you need comes down to the area you are lighting, not the brand. The two picks below cover the common cases for a flat or balcony grower - one efficient shelf panel and one simple windowsill bulb.
Selections are based on manufacturer specifications, independent testing and UK listings. Linked prices update automatically.
At a glance
All 2 options side by side.
 Mars Hydro TS 600 |  SANSI 24W Grow Light Bulb | |
|---|---|---|
| Price | See price | See price |
| Best for | The efficient one-shelf panel. | The windowsill top-up. |
| Review | Read review → | Read review → |
| Buy |
The picks in detail
Mars Hydro Mars Hydro TS 600
Bottom line. The efficient one-shelf panel. Silent, fanless and honestly rated at 100 W, it starts seeds and runs a 60 cm shelf of herbs and greens with ease. The best balance of light output and running cost for a small indoor grow.
Pros
- Genuinely silent - passive cooling means zero fan noise indoors
- Efficient for its class at roughly 2 umol/J, replacing a 150 W HPS with lower running cost
- Honest 100 W draw makes daily energy cost easy to predict
- Current version adds knob dimming and controller support, so output can be trimmed for seedlings
- Light, compact panel with a 5-year warranty and UKCA certification
- Reflective hood design pushes light down into a small footprint efficiently
Cons
- Flowering-grade coverage is only about 50 x 50 cm - the 2x2 ft claim applies to veg growth
- Fixed, non-detachable power cord limits placement
- No UV component in the spectrum
- Utility looks - a bare panel with visible hardware
- Older non-dimmable stock is still in circulation under the same TS600 name
SANSI SANSI 24W Grow Light Bulb
Bottom line. The windowsill top-up. A full-spectrum bulb that screws into a normal fitting, ideal for lifting a few pots of herbs that need more light than a windowsill gives. Not a substitute for a panel over a whole shelf, but cheap and unobtrusive.
Pros
- No special hardware - screws into any E27 lamp you already own
- Natural-looking 4000 K white light with near-perfect colour rendering, not a purple blurple glow
- Ceramic chip-on-board construction runs fanless and silent with good heat conduction
- 60-degree lens focuses light down onto the plant instead of the room
- Very low running cost at 24 W
- Cheap enough to scale one bulb per plant
Cons
- The ceramic body gets genuinely hot to the touch - needs clearance from foliage and shades
- One bulb only covers a 45-60 cm circle usefully - collections need multiple bulbs or a panel
- Output falls off quickly with distance, so hanging height discipline matters
- SANSI sells several 24 W shapes (PAR25, A21, older models) with slightly different figures, which confuses comparisons
- Not dimmable
Panel or bulb: which grow light do you need?
Choose a panel like the Mars Hydro TS 600 when you are lighting a defined area - a propagation shelf, a row of herb pots, or seedlings you are hardening off before spring. It delivers even, efficient light across roughly 60 cm and runs silently, which matters in a room you also live in. Choose a bulb like the SANSI 24 W when you just want to supplement daylight for a couple of pots on a windowsill; it fits an ordinary lamp and costs very little to run.
If your growing area is larger than about 60 cm, or you want stronger light for fruiting plants, step up to a bigger panel such as a Spider Farmer SF1000-class light rather than adding more small ones - a single larger panel gives more even coverage for a modest increase in power draw.