Bar LED grow lights are extremely popular. It’s no wonder – all plants are directly under a light source. This means:
- There are no hot or cold spots
- You get an even canopy, with no taller central plants casting shadows
- All light is beamed down, rather than out - you lose less light to walls
The only problem with using bar LED grow lights in grow tents is that they take up the entire footprint of the tent.
The light fixtures are so large, that once you position them beneath your fan and filter, you’re 30cm closer to your plants. In a standard 2m tall tent, this is insane! With the amount of light modern fixtures emit, you risk getting too close to your canopy.
The latest fixtures have amazing PAR ratings of up to 2.7 μmol/W. At these levels, with reduced headroom, your plants can actually be getting too much light. This leads to growth issues and possible bleaching out of the leaf pigments.
The good news is there are 4 simple steps you can take to avoid this problem.