Switching T5 to Hps

Hey Buds ,

I am about to switch my plants from my T5 Veg lights ( 4 X 54w T5) to 2 X 600 watt HPS

I am currently feeding 3 times a day on a automated system (ph 6 and 700ppms or 1100 microsiemens ) and sorry growing in 50/50 coco perlite blend

I was reading up about how the new light intensity and the heat can create problems in the garden .

is there any preventative measures i can take to make this transfer smoother ?



Thanks guys

Heybudding said:

Hey Buds ,

I am about to switch my plants from my T5 Veg lights ( 4 X 54w T5) to 2 X 600 watt HPS

I am currently feeding 3 times a day on a automated system (ph 6 and 700ppms or 1100 microsiemens ) and sorry growing in 50/50 coco perlite blend

I was reading up about how the new light intensity and the heat can create problems in the garden .

is there any preventative measures i can take to make this transfer smoother ?



Thanks guys

Click to expand...

I'm still learning too, but I would start with the lights higher at the beginning and bring them down or let the plants grow up to them. I went from t5 to quantum boards and it was kinda a shock for my plants. I do have a lot of light in there and I started them too close to begin with, but I didn't have the same issues going from t5 to cmh. I don't have experience with HPS though.

Put your hand at canopy level and if its not uncomfortably hot then your plants wont mind the radiant heat.
Keep an eye on your air temps, increase air exchange if they go higher than you want. Bare in mind you don't want your thermometer under direct light to get an accurate reading.
If air temps are too hot and you cant bring it down then feed lower EC because they will drink more.

The most likely thing with a HPS are tacoing from heat stress , slow light burn is less common but you will notice it on large fan leaves higher up the plant, its not that common though.

There may be a period of stress when you jump form one light to a different spectrum and higher intensity. You can raise your lights and allow the plants to adjust.

Obviously your environment has changed so you may have to change your equipment, up your fan and filter if needed.