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Products
FAQ
Q: What is a full spectrum build?
A: A full spectrum LED build is one that uses multiple wavelength LEDs. For more information please checkout http://www.nano-reef.com/forums/index.php?showtopic=294733&st=0#entry3740354
Q: What is the difference between "Pre order" and "Add to Cart" buttons on the website?
Pre order indicates the item is currently not in stock and will be in stock within 14days. "Add to Cart" indicates the item is in stock and will ship immediately unless combined with Pre Order items. We keep a very light stock to get orders processed quickly so as long as your order doesn’t have Pre Order items in it, your package will ship out instantly.
Q: Why is there a shipping insurance on all orders?
A: Shipping insurance is about 2.9% depending on the location. It is used to cover all packages we send out so if the items get damaged in transit, its covered. This is just piece of mind for our customers. The insurance does not cover theft of a package. If you believe that your package could be stolen from your porch, please ask for signature required.
Q: What can I use these LEDs for?
A: LEDs can be used to light almost anything. They are the new technology for lights that are going to replace CFLs. You can create a flashlight with these LEDs, light a display or even light an entire room. We find most of our customers are in the aquarium industry and light their reef that previously required 400w Metal Hilde lamps that cost lots of $$$ to run and are very inefficient. LEDs use a fraction of the power of a Metal Hilde and last 10+ years. Saving money has never been easier!
Q: What do I need to build an LED array for an aquarium?
Build list:
Q: How many LEDs would I need for XXX size aquarium?
A: The general rule of thumb is to have 1 LED per 15-20 square inches of surface area of a tank. I personally would use 36 LEDs per 24x24in area and use a dimmable power supply so you can keep anything in the long run and adjust the light for your current tank.
Q: How many of what color would I need?
A: Most people like the 14k look which is two royal Blue for every Neutral White (XP* models). Or you can simple just get one of the 3UP boards that does the mixing for you: CREE XT-E Royal Blue XP-G Neutral White 3 UP
Q: Are these the latest and greatest LEDs?
A: Since this is a group buy website we keep almost zero stock so we only get the latest and greatest LEDs. Don't settle for last years model when you can get the newer more efficient LED for cheaper. The LEDs you are ordering literary came off the manufacturing floor a couple days before you get them.
Q: What if I don't know which ones I should be getting?
A: This is a new technology and you are about to step into the cutting edge. You won't know every answer and neither will we but we are learning every day and we will gladly help you with any design questions you have. Just post your questions in the comments section or email us at support@ledgroupbuy.com. I rather you get less of the right LEDs then more of the wrong ones.
Q: Do you carry power supplies / drivers?
A: Yes! We now carry the top end LED drivers made by Inventronics: Power
Q: Are XP-G better than XR-E? A: YES! XR-E are the 2009 bigger bulky models that put out less light! XP-G are the new smaller more efficient ones.
Here is example of size difference: http://ledsreview.com/news/214/
Example of difference for cool whites:
XR-E puts out 107 lumens @ 3.3
whereas XP-G puts out 139 lumens @ 3.0v
So what that means is you get more light for less power. There is almost no reason to buy XR-E unless you still have optics for XR-E laying around that you haven't used (Even still i wouldn't buy them)
