FREE New Zealand Delivery
FREE New Zealand Delivery

400w MH Lamp

400w MH Lamp
400w MH Lamp
In stock at Herbal House

400w MH Lamp

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Our MH grow lights have been designed to be particularly effective for the vegetation stage of your plant’s grow cycle. If you’re looking for vigorous plant growth and high-quality vegetable yields, this 400W veg heavy MH bulb is definitely something to consider. Even at 400W, MH lighting can produce a strong and clear white light to help flood your plants with artificial daylight, remove shadows and encourage growth.

MH bulbs are often used in commercial flood lighting to provide even coverage of light across a large area. With the help of reflectors or a polar lining within your grow tent, you can guarantee your plants will receive the optimum amount of light they need to thrive and flower.

Although designed with vegetation in mind, the light spectrum of MH bulbs can work within every stage of the growth cycle. So, if you’re looking to grow all year round, these metal halide bulbs can extend your growing capabilities to exactly that.

The initial lumen of BLANK is maintained throughout which is integral for vegetation. As these bulbs are renowned for their longevity, you can enjoy thousands of hours of light out of a single bulb.

We cover the cost of delivery on all orders for you!

Processing time:
Once you have placed your order through our online store you will immediately enter the queue for the distribution team to package up and prepare your items for the courier to collect.

Orders placed before 1pm
- We will aim to have these packaged up and collected by the courier the same day, however, this is not guaranteed and it may go the following morning.

Orders placed after 1pm - Will be collected by the courier the following morning, if you order after 2pm on Friday or anytime in the weekend then you can expect your package to be collected by the courier Monday morning.

Courier time:
We are proud of our courier service and can happily say most NZ deliveries are typically 2 - 3 business days, however, if you are rural then please be patient and allow for an additional day for the driver to reach you.

You are covered when you buy from Herbal House

We ensure that all of our products undergo rigorous quality testing and extensive packaging to reduce the chance of any defects, however, in the unlikely circumstance that there is a failure with your purchased goods, simply take a deep breath and get in touch.

2 Year Warranty Included on each product.

For more details on our warranty policy please visit our warranty page


Don't just take our word for it - here's what our customers have to say.

Customer Reviews

Based on 6 reviews
Terry W.
Outstanding Service

Absolutely outstanding Service and prompt delivery. Unfortunately my 1st bulb must of had a rough courier handle it but they were fast to send another replacement so would not hesitate to deal with this company anytime! Thanks 5* AAA.

James G.

Delivered day after ordered. Awesome service 😎

William B.

all round good product

Levi B.
Herbal house nz

Amazing service qwick and fast if their any delays their sorted out quickly highly recommend

Maisie T.

placed my order & Received my order weeks before my online warehouse order 🤦‍♀️ Packaging was great and order is Ka Pai 🤝
Thank you I am very happy

Daniel A.

Great trade very fast thank you very much

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