ledtime
Member
I have a 680W 8 bar light in a tent like yours, and am keeping the light 23-30", or higher. This is late in veg on my first run. LEDs make photons for sure. Those plants are 600-650 umoles at the tops.
To avoid the center hot spot, I did this. We'll see how the SCROG goes, for the wind burn. There is SIP control box (5 gal bucket) under the fan, and for now I can rotate the bags 180* to even the light.:
filedata/fetch?id=17815108&d=1616605964
BTW, sorry to jack the thread, and I am not really shilling, but...
In the pic above, the left side has a lower light level that can be seen in the leaf color. The tent/light were bought 2 months ago. A warrantee is only as good as the people behind it, and the logistical chain to support it. The ROI e680 in that tent developed a bad bar that stays on at 20% regardless, on a Friday evening. I emailed Growers House, next morning Sat get a call (missed the call back), and called Monday, new one arrives Friday. I will put the bad light in the box, and send it back on their dime. I will end up with a new one, with free shipping both ways. I had to pay for the replacement, and will be refunded when the bad one returns. Fair enough. Consider that when you buy a light from alibaba.
Right now I have a layout like that without the fan in the center. I'm in early veg and hitting them with 400umols and I'm 32" above at about 280W. The center is a concern but it's really just a small part of the footprint. The avg ppfd across the canopy is in range for my setup.
I agree on warranty help. Hopefully I never need it. If I did it would definitely be on the diode board. I've never seen a meanwell driver give up. Every single thing I had done with KB was fast and accurate. They answered every single question. The bench tested things for me. I was impressed. shipping to/from China would be slow. Absolutely. Hopefully what I've got lasts without the need for that exercise. So good so far.
I have a gorilla tent that it setup with 8' in height. I could mount a fan above the light and have it oscillate and still move the air under the light. Good old 12" hurricane fans!
This light was my first dabble back into LED since 2010. The price was right for me to pull the trigger. Here we are a year later and you can get something comparable stateside for slightly more money.
For now I'm happy until I'm not.