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Showing results for tags 'diy led'.
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Hi guys, I recently did a 30 3w LED conversion for my boyu t550 (replacement bulbs are hard to find). I managed to fit the LEDS + heatsink in the empty space of the old bulbs and keep most of the wiring including the on/off switch and fans. What would be the best ratio to run them at to support corals? Currently the 18 whites are on 40% and 10 blues plus 2 full spectrum are at 60%. My concern is going to bright and just overwhelming my corals. Do I need to make it brighter or dimmer?
The problem: I created a DIY led for my pico with 2xRB and 1xCW cree leds on the 20mm star boards. The leds worked fine but they created a disco ball effect that I really didn't care for. To make things worse I'm using a glass top to reduce evaporation on my pico and the condensation was acting like lenses to make the problem more pronounced. You can see the individual light beams in the top of the picture. I originally had the leds spaced to give more coverage but tried to bunch them as close as possible to eliminate the effect. It helped but didn't get rid of it. So i was looking through ebay and noticed there are Cree XM-L RGBW leds. All the emitters are in one package with one integrated lens. I figured it was worth a shot and ordered 5 to try out. If I still can't stand the effect I'll have to try something else... The plan: Wire up 4 channels of LDD 700's for each color. Drive the LDD with an arduino I'm already using for the current light. I'll remote mount the drivers and Arduino to make it more sightly and use a large scrap heatsink to cool the LED's. I'll thermocouple up the LED's to see if I can get away without a fan, but have one ready if that doesn't work.
SavaS posted a topic in Nano Reef Journals10/8/17 - Tank has been moved into a new setup, link to new journal is here: New Tank So here is my little Pico reef. Including the AC70 filter mod the tank is right around 2.7 gallons. When I first started it this was my first attempt at saltwater and the tank was a plain glass aquarium and a cheap 6 X 3watt led fixture I bought off ebay. I had to remove the optics because you could clearly see the blue and white light in the water. I knew when I started this I didn't want a tank with a light hanging high above it or I would never be happy. The LEDs are currently about 2 1/2"s above the water level, it works, the tiny zoa Frag I first added has grown considerably from 10-12 heads to over 30. One of the two hammer corals I first added is still there, the other was eaten by a peppermint shrimp. It of course was the more attractive of the two. The remaining one was also torn up pretty good but is slowly coming back. I spent days reading forums from all over the net, anything to do with picos and decided that like a lot of others I wanted the tank to look like a piece of furniture instead of a glass box full of water. So after some measurements and several bad cuts I had the basic frame work finished. I had to empty the tank into a bucket and then paint the back of the glass and attach the wood to the framework. Everything survived in the bucket for about a two days while I worked. Here are some pictures of the original tank and some variations of the rockwork that have changed over the past couple months.