Gavita 315w CMH

Out of stock
  • Latest HID tech in indoor horticulture
  • Balanced, full spectrum to promote better quality
  • High efficiency, large output light for massive yields
  • Your choice of 930 (red) or 942 (blue) lamp
  • Suitable for use with the Gavita Master Controller
  • Perfect for smaller spaces or as a supplementary light

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Fixture of choice for small installations or supplemental use

The Gavita 315w CMH is perfect for tents up to 1m2 as standalone lighting or for use in-between two HPS fixtures as a supplemental light. If you want a Gavita CMH fixture to cover a larger space, take a look at the Gavita 630w CMH

The Gavita 315w CMH is compatible with the Gavita Master Controller this redefines the traditional installation of lighting fixtures, there’s no need for contactors and clocks as the controller takes care of everything. Use of the controller gives added safety features such as automatic dimming of your lights at elevated temperatures and even a safety shutdown.

The Gavita 315w is compatible with the Repeater Bus cabling system, allowing you to daisy-chain the fixtures in your installation. A Repeater Bus interconnect cable is included with every fixture. You can connect 5 strings of 100 fixtures per Master controller port. This enables you to control up to 1000 fixtures on one EL2 controller – perfect for industrial scale applications or for use alongside other Gavita fixtures in smaller spaces.

The fixture comprises of a ballast, reflector and lamp in one complete compact package. Made according to horticultural standards, the housing of the ballast is sealed and contains a gore-tex® plug to ventilate the housing, while keeping dust and humidity out. With no external lamp wires, there’s a low electromagnetic interference (EMI), making it compliant with FCC regulations.

Gavita mount the PCB and heat-generating components directly on the heat sinks instead of in a ballast bracket. The much cooler electronics result in a greater reliability, higher efficiency and a longer life. The innovative design of the fins across the housing increases the cooling effect thanks to the large surface area that allows for passive cooling.

The Gavita 315w CMH comes with a M140 SE CDM 315 reflector (Medium, 140 degree beam angle, for single CDM 315 Fixtures) – it’s much smaller than other options to fit the 315w lamp better and provide a more uniform spread of light. We recommend replacing reflectors yearly to keep your garden’s efficiency up – otherwise you may start to notice a drop in yield.

With your choice of Philips lamp included, the Gavita 315w CMH will help you bring your gardens quality up. We suggest using 942 4.2k (blue) lamps for vegetative growth and supplementary applications, while the 930 3k (red) lamp is best suited for floral development but can also be used throughout the entire life-cycle of the plant. You can find a replacement 315w Philips Lamp here

How to use the Gavita 315w CMH Fixture:

  • Insert the lamp into the holder using a cloth or a pair of gloves
  • The Fixtures easy to hang with just two balanced hanging points
  • Suspend your fixture with one of our Light Hangers, securely attaching your grow lights and allowing for easy vertical repositioning.
  • Set the height of the fixture from the canopy – we suggest around 30 – 50cm above
  • Plug in and get growing!
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Next Day Delivery

Our UK Mainland delivery service is provided by Parcelforce Worldwide.

NOTE: For anyone outside of the UK (i.e. Republic of Ireland and the EU) you are free to arrange your own courier service. To order from us using your own courier, complete your purchase from our website, and select "Collect from our Warehouse — Chigwell". This is where you can arrange your own courier to collect your item(s) from. Address details are available on the Contacts page.

Standard UK mainland orders over £50.00 are eligible for a free standard next working day delivery service (Mon – Fri)*.

  • *Free delivery includes orders up to, and not exceeding, 30kg, that fit in a single, standard shipping box.
  • *Free delivery may exclude orders containing one or more large volume items. Examples of large volume items are, but are not limited to, bags of media (clay balls, perlite, soil etc.).
  • *Free delivery excludes Garden Power Tools.
  • *Large items are sent via a standard 48L (48 hour large) service. Large items take from 2 working days to arrive.

Where possible, orders received by 2:30pm Mon – Fri are dispatched the same day. (*Excluding Garden Power Tools).

Where possible, Garden Power Tool orders are dispatched the same day when received by 11:00am Mon – Fri. Orders after 11:00am are usually dispatched the next working day

UK mainland orders after 2:30pm Mon - Fri are subject to next working day dispatch:

  • For example, orders after 2:30pm on a Friday are dispatched on the next working day, usually a Monday.

UK Mainland Pallet deliveries are charged separately per pallet. They are usually delivered in 2-3 working days. Please contact us for the latest cost price.

    Our shipping providers terms and conditions limit our ability to send some products internationally. See our list of restricted items.

    All prices shown below are per parcel with a maximum weight of 30 kg per parcel. Items over 30 kg are split into multiple boxes and charged per box.

    Future Garden are not liable for any additional fees that may be incurred. Any unexpected costs must be paid by you (the customer).

    Delivery services provided online are estimates. There may be unforeseen delays with your order, especially around our busiest time of year. Very busy periods can see very high volumes of parcels being collected, processed and delivered. If you have a special delivery requirement, please contact us via email - before placing your order.

    UK Mainland

    Standard Next Working Day (Orders over £50 <30 kg) FREE
    Standard Next Working Day (Orders under £50 max. 30 kg per parcel)* £6.95
    Standard 2-3 Working Day (Orders under £50 max. 30 kg per parcel)* £4.95
    Pallet Delivery £70.00

    Isle of Wight

    Next Day Service £8.95

    Northern Ireland

    Two Day Service £18.95

    Isle of Man & Scilly Isles

    Two Day Service £20.95

    Scottish Highlands & Islands

    Two Day Service £16.95


    Sorry, no online quotes are available for orders outside of Europe. If you would like to place an order for delivery outside of Europe, email us directly and we can prepare a bespoke quote for you based on the weight, dimensions and destination country for the most accurate cost and quickest delivery times to you.

As per the Consumer Contract Regulations June 2014, you can return goods and receive a full refund under the following conditions:

  • You have had the goods delivered within seven working days of delivery from Future Garden Ltd, this starts from the day after the goods have been signed for.
  • The items are unopened and in the original condition as when they were delivered to you.


  • The items have developed a fault during standard use.
  • The items are within the manufacturer's warranty period.

Simple checks

  • Please ensure that any parcels delivered are intact and free from damage and unopened, if they appear to show any damage please make a note when signing for the goods, alternatively you can refuse delivery of these items, however only full refusal if multiple parcels will be accepted, in the unlikely event this occurs please contact us asap on 020 8502 7722 or by email
  • Please check all items once unboxed to ensure that they are not damaged and are fully functioning, if this is not the case please ensure you notify us as soon as you can, or within the given returns policy time frame, on 020 8502 7722 or by email  we will then arrange suitable collection and replacements where necessary.
  • If any items appear not to be functioning as expected, do not attempt to fix or tamper with any products, this could affect your statutory rights, please notify us on 020 8502 7722 or by email and we will arrange a suitable replacement.
  • If you notice any irregularities with your order, please notify us as soon as possible or within 7 working days, on 020 8502 7722 or by email will endeavour to correct and refund where possible. 
  • You can return any unwanted items, you can return the item(s) to us unopened and intact in a re-sellable condition within 14 working days after the day of receiving the goods, we are unable to accept any goods back that have been opened or the seal(s) have been broken or have been damaged, unless reported as damaged in transit, you can contact us on 020 8502 7722 or by email