MARLEY.
If she's amazing, she won't be easy.
Hello and welcome to my test thread.
Let me first start by saying that I was sent a P300 to test, I did not purchase it myself. That being said, let me also say that when I first started growing I began with some LED's I found on Amazon that were highly rated, but I was pretty disappointed with the results. I switched to an MH/HPS setup, and later to a CMH setup, both of which I've had great results and had no desire to try LED's again...at least not at the price range I could actually afford. Going into this I would say I had a slight bias against LED's, though I intended on being as unbiased as possible.
I decided to wait until I was mid-grow before posting this thread so that I would have more experience with them, which would allow me to post more information in this first post, as I assume it will be the most viewed post in the thread.
Now let's get into it.
As I mentioned before, I've had previous experience with LED's. For this test I though it would be useful to do a grow-off between the LED I purchased and the P300. To make it as fair as possible I used my 8x4 tent with the P300 on one end and the Meizhi 450w at the other end, both growing Critical Kush from the same bag I received from Seedsman. There was a large unused space in the middle of the tent which I decided to put a Viperspectra 300w light. Unfortunately I didn't have anymore Critical Kush seeds so I popped in a Nirvana Bubblelicious. I don't plan on using information from that light in this thread too often because of the strain difference, but it's in the test tent so you should know about it.
Size and Build Quality:
Power Usage (measured with a Kill-a-Watt):
Meizhi 450w
Temperatures:
*The hottest spot I could find on the housing*
Meizhi: 95f
Viperspectra: 94f
P300: 91f
What's interesting is that the P300 and Viperspectra are running all their LED's, while the Meizhi is only running the veg lights. I'll measure it again and see if it gets even hotter after flipping to flower.
As far as tent temps, the tent stays 8-10 degrees (Fahrenheit) cooler than my 4x4 with two 315w CMH's. My tents are in my basement which usually stays somewhat cool in the summer, but I've been struggling with higher temps this summer in the CMH tent. The LED's definitely solve that problem.
If there's any other information you would like to see about the P300 or the other two LED's, or any questions you want answered, let me know.
And now, on to the grow!
Let me first start by saying that I was sent a P300 to test, I did not purchase it myself. That being said, let me also say that when I first started growing I began with some LED's I found on Amazon that were highly rated, but I was pretty disappointed with the results. I switched to an MH/HPS setup, and later to a CMH setup, both of which I've had great results and had no desire to try LED's again...at least not at the price range I could actually afford. Going into this I would say I had a slight bias against LED's, though I intended on being as unbiased as possible.
I decided to wait until I was mid-grow before posting this thread so that I would have more experience with them, which would allow me to post more information in this first post, as I assume it will be the most viewed post in the thread.
Now let's get into it.
As I mentioned before, I've had previous experience with LED's. For this test I though it would be useful to do a grow-off between the LED I purchased and the P300. To make it as fair as possible I used my 8x4 tent with the P300 on one end and the Meizhi 450w at the other end, both growing Critical Kush from the same bag I received from Seedsman. There was a large unused space in the middle of the tent which I decided to put a Viperspectra 300w light. Unfortunately I didn't have anymore Critical Kush seeds so I popped in a Nirvana Bubblelicious. I don't plan on using information from that light in this thread too often because of the strain difference, but it's in the test tent so you should know about it.
Size and Build Quality:
- The Meizhi and Viperspectra feel of similar build quality, both are made of metal and are hefty for their size. I would say they are good. The reflectors in the Meizhi seem slightly cheaper than the Viperspectra.
- The P300 clearly uses a thicker metal housing as there is no flex on any of the metal surfaces. The reflector is a different style and looks to be good quality. The P300, as seen below, is larger than the other 300w and 450w LED's.
- The P300 has the advantage in these categories.
Power Usage (measured with a Kill-a-Watt):
Meizhi 450w
- Veg switch only: 133w
- Veg and Flower: 201w
- Veg switch only: 100w
- Veg and Flower: 173w
- Veg and Flower: 260w
- P300 has the advantage here
Temperatures:
*The hottest spot I could find on the housing*
Meizhi: 95f
Viperspectra: 94f
P300: 91f
What's interesting is that the P300 and Viperspectra are running all their LED's, while the Meizhi is only running the veg lights. I'll measure it again and see if it gets even hotter after flipping to flower.
As far as tent temps, the tent stays 8-10 degrees (Fahrenheit) cooler than my 4x4 with two 315w CMH's. My tents are in my basement which usually stays somewhat cool in the summer, but I've been struggling with higher temps this summer in the CMH tent. The LED's definitely solve that problem.
If there's any other information you would like to see about the P300 or the other two LED's, or any questions you want answered, let me know.
And now, on to the grow!
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