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The Mars Hydro TS600 is a compact 100W LED grow light designed for beginners and smaller indoor growing spaces. For this Mars Hydro TS600 review, I’ve been testing the current dimmable version at home with a large bush tomato to assess its setup, coverage, controls, running costs and real-world growing performance.
If you think you need more power or a larger growing area, see our Best LED Grow Lights UK guide for alternatives across a range of budgets.
HomeGrower rating: ⭐⭐⭐⭐⭐ 5/5
Quick verdict: The Mars Hydro TS600 is one of the best-value entry-level grow lights I’ve tested. At under £50, it is powerful enough for one large spreading plant or up to two smaller fruiting, flowering or medicinal plants.
I’m currently using the TS600 with a large bush tomato that I brought indoors in September as outdoor light and temperatures declined. The plant has continued to grow and ripen fruit under the light, which is exactly the sort of real-world performance I want to see from a budget model.
It earns five stars because it combines genuinely useful growing performance with a very low purchase price. For someone buying their first proper grow light, I think it is an excellent place to start.
Mars Hydro TS600 Specifications
The TS600 is a compact 100W full-spectrum LED grow light aimed at smaller indoor growing spaces.
| Power | 100W |
|---|---|
| LEDs | Bridgelux |
| PPF | 190 μmol/s |
| Efficiency | 2.0 μmol/J |
| Dimmable | Yes |
| Vegetative coverage | Up to 2 × 2 ft |
| Flowering coverage | Around 1.5 × 1.5 ft |
| Cooling | Fanless passive cooling |
| Warranty | 5 years |
These specifications are for the current Mars Hydro TS600. Mars Hydro has updated the model over time, so some older reviews may show different features or specifications.
Important: This review covers the current dimmable Mars Hydro TS600. Older versions of the TS600 were fixed-output, so some older reviews and product information online may describe a slightly different light.
My Real-World TS600 Test
Bush tomato before and after moving indoors under the Mars Hydro TS600, showing the crop continuing to ripen under artificial light.
I bought the TS600 to actually use rather than simply review from a specification sheet.
My current test is particularly useful because I’m asking it to do something more demanding than raising seedlings.
I had a large bush tomato growing outside during the summer. By September, falling temperatures and reduced natural light meant there was no longer enough useful growing weather to allow the plant to finish properly outdoors.
It was still carrying a considerable number of green tomatoes, so rather than abandon the crop I moved the whole plant into my insulated garden room and placed it under the Mars Hydro TS600.
I’m currently running the light for around 14 hours per day, with the TS600 positioned approximately 25–30cm above the canopy. The garden room is insulated and heated so that the temperature does not fall below around 16°C.
I originally ran the light for 16 hours per day before reducing it to 14 hours.
The important point is that the plant has not simply survived. The tomatoes have continued to develop and ripen under the light, while the plant has remained actively growing indoors.
For me, that is a much more useful demonstration of what a budget grow light can actually do than simply quoting specifications or looking at a PPFD map.
The TS600 has enough usable light to support a genuinely productive fruiting plant, and at under £50 that is impressive.
How Much Electricity Does the TS600 Use?
I’m monitoring the TS600 with a TP-Link Tapo P110 smart plug, which means I can see its actual electricity use rather than relying only on the rated wattage.
With the dimmer set to roughly 80%, the light is drawing around 80–82W in my setup. Running it for approximately 14 hours per day gives a daily electricity use of around 1.13kWh.
Using an electricity price of 26.11p per kWh, that works out at approximately:
- 29.5p per day
- £2.06 per week
- £8.85 per 30-day month
Your own running cost will depend on the dimmer setting, daily lighting period and your electricity tariff.
If you want to calculate the cost for your own setup, use my Grow Light Running Cost Calculator. You can enter your actual wattage, hours of use and electricity rate to get a more accurate figure.
I’ve also reviewed the Tapo P110 smart plug I’m using here, which is a simple way to monitor the real power consumption and running cost of grow lights and other appliances.
How Many Plants Can the Mars Hydro TS600 Grow?
I think grow-light coverage figures can make this question more complicated than it needs to be.
A much easier question is:
How many real plants can I put underneath it?
Based on my own use, I’d regard the TS600 as suitable for:
- one large, spreading plant, such as my bush tomato; or
- up to two smaller plants, depending on their size and shape.
The important factor is canopy size rather than simply the number of pots.
My bush tomato demonstrates that very well. Although it is only one plant, it has developed a broad canopy and effectively occupies most of the useful growing footprint of the TS600 by itself.
With smaller or more upright fruiting, flowering or medicinal plants, two is much more realistic.
I wouldn’t try to stretch the TS600 over three or four mature plants. Doing that means either raising the light higher or allowing more of the canopy to sit outside the strongest illuminated area.
For one substantial plant or a pair of smaller plants, however, it makes a lot of sense.
How Does the TS600 Compare With the Spider Farmer SF1000 and ViparSpectra XS1500 Pro?
The Mars Hydro TS600 sits in an interesting position because there are two very different ways to spend more money.
The Spider Farmer SF1000 is the more efficient 100W-class light. It produces more useful light for the same nominal power draw and feels like the more refined product overall.
However, I would not buy the SF1000 expecting a major increase in the number of mature plants you can grow. In practical terms, it is still best thought of as a small grow light for roughly one large plant or up to two smaller plants.
That is why, on value alone, I would choose the Mars Hydro TS600. At under £50, it gets you into proper indoor growing for considerably less money while still having enough output to support a productive flowering or fruiting plant.
The ViparSpectra XS1500 Pro is a more meaningful upgrade if your priority is power and coverage.
At 150W, it has enough extra output to be hung higher while still maintaining useful intensity at canopy level. That wider spread makes it much better suited to around three normally sized mature plants in my experience.
That does not mean three large bush tomatoes like the one shown in this review. A broad plant like that can fill a surprising amount of space on its own. But three more upright tomatoes, chillies, peppers or similarly sized plants are much more realistic under the ViparSpectra.
| Grow light | Best reason to choose it | Realistic plant capacity |
|---|---|---|
| Mars Hydro TS600 | Best value and lowest-cost entry point | 1 large spreading plant or up to 2 smaller plants |
| Spider Farmer SF1000 | Better efficiency and refinement | Similar overall capacity to the TS600 |
| ViparSpectra XS1500 Pro | More power and wider usable coverage | Around 3 normally sized mature plants |
So my recommendation is fairly simple: choose the TS600 for value, the SF1000 for efficiency, and the XS1500 Pro if you genuinely need more growing area.
If you want to compare these with other options, see my Best LED Grow Lights UK guide.
Who Should Buy the Mars Hydro TS600?
I think the TS600 makes the most sense for growers who want a proper LED grow light without spending very much money.
I would particularly recommend it if you:
- want your first proper grow light
- have a budget of around £50 or less
- want to grow one substantial plant
- want to grow up to two smaller fruiting, flowering or medicinal plants
- need supplementary lighting through autumn and winter
- want to bring outdoor plants inside towards the end of the season
- want something dimmable and inexpensive to run
- are not yet ready to spend £100 or more on a larger setup
It also makes sense as a secondary light if you already own larger equipment. Even if you upgrade later, the TS600 can still be useful for seedlings, propagation, overwintering plants or creating a second small growing area.
If you already know that you want to grow several mature plants across a wider canopy, I would skip the TS600 and move straight to a more powerful fixture instead.
Mars Hydro TS600 Review: Final Verdict
The Mars Hydro TS600 is a very easy grow light to recommend at its current price.
It is not the most efficient light I have tested, and it does not have the coverage of a more powerful 150W model, but that is not really the point.
For under £50, you get a dimmable 100W grow light that is genuinely capable of supporting a productive flowering or fruiting plant rather than simply keeping seedlings alive.
My own bush tomato has continued to grow and ripen indoors under the TS600 after being brought in from outside in September, which gives me much more confidence in recommending it than specifications alone ever could.
I would treat it as a light for one large spreading plant or up to two smaller plants. If you need more coverage, the ViparSpectra XS1500 Pro is the more meaningful upgrade. If you want greater efficiency while staying around the same power level, the Spider Farmer SF1000 is the better step up.
For someone buying their first proper grow light, though, I think the TS600 hits the sweet spot of price, usable output and simplicity.
HomeGrower rating: ⭐⭐⭐⭐⭐ 5/5
Related Articles
- Best LED Grow Lights UK – Compare the TS600 with other grow lights across different budgets and power levels.
- Spider Farmer SF1000 Review – A more efficient 100W-class alternative to the TS600.
- ViparSpectra XS1500 Pro Review – A more powerful option with wider usable coverage.
- Grow Light Running Cost Calculator – Work out the electricity cost of your own grow-light setup.
- Grow Lights Explained – A beginner-friendly guide to wattage, coverage, efficiency and choosing the right light.
- Tapo P110 Smart Plug Review – The smart plug I use to measure real-world grow-light energy consumption.