315w Philips Master CDM Lamps


Lamp: Philips 942 Daylight CDM Lamp
Sale price£95.99

315w Philips Master CDM Lamps

These state-of-the art lamps generate a greater level of useable plant light (photosynthetically active radiation) and run with a blinding intensity that's immediately apparent to the naked eye. The lamp is full-spectrum so it will produce the goods in both veg and flower – expect to see increased growth rates, tighter internodes, an improvement in overall vigour and an increase in final weight. It also has an increase in the red spectrum which gives a definate boost during flowering.

Using the Philips Master CDM Lamps:

Hold with a clean cloth and screw the lamp into the bulb-holder fitting of your reflector until it will turn no further. It is important that the lamp is screwed very firmly into the holder. Failure to fit the lamp tightly will cause arcing inside the holder between the centre connector and the contact on the lamp. This will melt the solder contact on the lamp and irreparably damage it. Ensure the lamp is completely clean and free of dirt, grease and finger-prints etc. before switching it on.

Warning: When HID lamps are switched on they run extremely hot. As with all high pressure sodium and metal halide bulbs it is necessary to avoid touching the lamp with anything such as fingers or plants as this may cause severe burns or fires. In particular avoid sprays or liquids coming into contact with the lamp as this may cause premature failure or even an explosion.

PLEASE NOTE: The 315w CDM lamps need to be bedded in as follows: on first illumination the lamp needs to be run continuously for a minimum of 15 minutes. This will allow the metals within the lamp to fuse correctly.

If the above is not adhered to, lamp warranty claims will be void.

As with all lamps the light output they produce will decrease with use over time. One Stop Grow Shop recommends you replace your lamp regularly to maintain your garden efficiency.

To see our full CDM / CMH Grow Light Kits range, click here



1 x 315w Philips Master CDM Lamp of your choice or both lamps


  • Philips GreenPower (CDM-TP) 930 Elite Agro CDM Lamp – full spectrum lamp with an increased red spectrum
  • Philips MasterColour (CDM-TP MW) 942 Daylight CDM Lamp  – full spectrum lamp with extra blue light for veg
  • Run at blinding intensity that's clearly visable with the naked eye
  • Ideal to give your plants a boost during flowering to increase yields
  • Highly efficient Philips 930 Agro puts out 1.9 micromole (umol) per watt of electricity
  • Highly efficient Philips 942 Daylight puts out 1.7 micromole (umol) per watt of electricity
  • Extremely high PAR levels on both lamps

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