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The Mars II 400 is designed to significantly reduce your costs of growing while ensuring maximum growth from your harvests. Perfect for small spaces or as a supplementary light in your indoor garden. Grow your favorite plants all year long.
With a record-breaking 2.5' x 2.5' coverage, the Mars II 400 can easily replace a 250 watt HPS traditional grow light, produce a superior yield, and higher-quality flowers - all while reducing operational cost by 1/3!
Grow and Bloom modes: Two on-board switches to control the mode of growth
Powerful: Next Generation Epistar™ High-Intensity LED’s
Optics Technology: 5-watt single chip LED
Plug & Play Device: No need to purchase additional equipment to operate the unit
Maximum Coverage: Covers a full 2.5' x 2.5' to easily replace a 250-watt HPS
12" from canopy
15" from canopy
18" from canopy
*Warehouses in the US, Canada, UK, Germany, and Australia; other countries please inquire for a quote
Wattage draw: 162 watts
HID equivalent: 250 watts
LEDs: Epistar Hi-Intensity LEDs; 50,000 hour lifespan (10+ years if LED lights are on 57% of the time)
Spectrum: 440nm, 460nm, 630nm, 660nm, 730nm (IR), 2400K-3000K
Lens angle: 90° - 120°
Thermal management: Aluminum heat sinks; Cooling fans
Dimensions: 14" x 14" x 3.5
Operating temperature: 85°F -105°F
Operating/input voltage: 85v-265v; Amperage: 1.7 @ 110v | 0.8 @ 220v
Product weight: 11.8 lbs
Recommended height above plants: 12" - 30" depending on growth stage
Additional details: BTUs: 638; 58 decibels; Plug Type: EU, UK, AU, USA, Japan; Plug-and-Play
Product includes: Power cord, Hangers
Recommended for: Indoor grow operations; Hydroponic, aeroponic, or aquaponic systems
Manufacturer's Warranty: 2 years
As soon as you place the order, an order confirmation will be emailed to you. This means we have received your order and payment. As soon as we receive your order, we automatically reach out to our warehouse to confirm the product is in stock and is available for immediate shipment. In rare cases, if the product is on backorder or unavailable, we will contact you immediately and ask if you would like to wait for the product to become available or have your payment refunded. If the item is available for immediate shipment (1-3 business days) we will submit the order for processing and arrange shipment.
Most products ship within 1 to 3 business days from the date of your order (unless indicated on the product page). We will send you tracking information as soon as it is available. If you do not receive tracking info within 5 business days of your order, feel free to follow up with us via email.
We offer FREE shipping in the USA via FedEx, UPS, or USPS. Expedited shipping is usually available for an extra cost. Contact us before your purchase if you prefer an expedited shipping method.
After the order is processed, allow 2 to 7 business days for the product(s) to reach you if shipped to a U.S. address. We can ship to most P.O. boxes, except when shipped via UPS.
Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Go through the checkout process to receive a shipping quote. We use a service called Webinterpret who acts as a parcel forwarder. They are a PayPal partner and are located in Folcroft, Pennsylvania, USA. Therefore, if you purchase a product through our international checkout system the item(s) will be shipped to the forwarding warehouse and then to you. In this case please allow a couple weeks (or more) for the products to reach you. Duties/taxes will be due at delivery when using the international checkout (parcel forwarding service).
If you do not want to use this service, email us to receive a shipping quote for items shipped outside of the United States. You may also place an order on our online store and shipping charges will be calculated and an invoice emailed to you to cover these charges.
Optic LED products ship FREE worldwide (to any country). A lower value for customs purposes is typically declared on these products.
Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not LED Grow Lights Depot.
We offer HASSLE-FREE return shipping in the U.S. if you are not 100% satisfied for any reason. Many brands have a 90-day return policy. See our full Return Policy for rules and guidance on returning an item after purchase and for brand-specific return dates. A 10-20% restocking fee (depending on brand) may apply for returns within the dates of the return policy.
We have been in business since 2014 and are a top-trusted online retailer offering honest grow advice and top-of-the-line LED grow lights and other grow/harvest/extaraction equipment.
Founder/Owner Erik H. overseas that every customer is 100% satisfied with their purchase. If something is wrong, we will make it right guaranteed! Call, email, or message us anytime and we will get back to you in about 1 business day or less (typically with-in minutes or hours during normal business hours). We have your back!
We offer FREE shipping in the USA via FedEx, UPS, USPS, or other popular couriers.
Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote. Some products ship internationally for free (such as Optic LED). Other products may have a shipping cost available on the product page (some HLG products, Electric Sky)
Items shipped internationally from the US may have VAT, duties, taxes, and/or local charges due at delivery.
Forget shopping locally or on other popular retail websites that charge tax. You can save a lot of money when buying though us since we do not charge tax in the USA.
We strive to ensure that we offer the absolute best prices online. Rest assured that you are receiving the best online price when you shop with us.
If you find a better price online before you order from us, we will match the competitor's price and give you an extra $10 for orders over $200 and $5 for orders under $200.
If you find an online store that offers a better price than us within one month of your purchase, let us know and we will provide a partial refund to match the price. (Not valid for products on Amazon or eBay. Because we are a for-profit business, we may refuse to offer a price match in which we incur a loss. This is rare.)
Finance your purchase in minutes! See our available financing options below:
You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.
We accept major credit cards, PayPal, Google Pay and debit transactions. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.
And just in case your purchase was not up to your standards, we offer hassle-free return shipping if you are not 100% satisfied for any reason. Many brands have a 30- to 90-day return policy.
It’s awesome, going great
Thank you. Like any other online shoppers, items that arrive earlier than expected is always a great surprise! Fast and reliable. Will order again once i upgrade my lights. Oh prices are amazing too.. Cheers
Product works as described, quick shipment a bonus
First grow with the Mars II 400 and I am delighted. My crops are three weeks from seedling and are growing like weeds. I have heard older reviews from other vendors that Mars Hydro can have LEDs die prematurely, and I have only used the light for three weeks, but it seems like a quality product to me.
Very good product. Solid, good spectrums, powerful, and exactly what I expected. Plan on getting another!