|01-21-2013 04:36 AM|
|Hoppy||Yes, considering your investment in a DIY light, you don't want to end up with too little light and no easy way to increase it. So, you design for more light than you want, and use a dimmable driver so you can reduce the intensity, if necessary. Today the cheaper option for many tank sizes would be manufactured LED lights, like the Finnex ones.|
|01-20-2013 06:01 PM|
|unicknn||so basically if I use a dimmable driver then I can build this one for high light and then just dim it down to medium? I actually just looked up the cost of the LEDs and was shocked at the price. I may end up going with a florescent light. Im gonna keep reading though. I want to do this but I want to do it right.|
|01-20-2013 05:34 PM|
|01-20-2013 05:06 AM|
I had LEDs on my reef tank they were ok I'm more of a halide guy my self. But do they grow plants ? What colors you use to use for good growth?
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|01-20-2013 03:20 AM|
Noob LED lighting question
Im in the process of planning out a planted tank. Ive had lots of tanks in the past and have always wanted to try a planted tank, I scored a free 45 gallon bow front today so its starting soon.
Im having some issues with figuring out the needed lighting.
Im planning on going for around 70 PAR( I thought I read this was medium, now its looking like this is high, can someone clarify?), this is a good start in a medium light, I want to start the tank without CO2 and then later on add it as I add more power to the lighting system... if I decide too.
Im using Hoppy's Excell and this is what Im finding:
LED spacing 2.25
cone angle 60
This shows that I can use Cree XP-E-Q5 LEDs at half power to get where Im looking to go.
My questions are this
1) the LEDs say their angles are around 125. Do I need to use LED lenses to get the desired 60 degree angle?
2) how far should the rows be spaced?
3) how long should these rows be? My tank is about 3 feet long. Im assuming that the strips should be as long as the tank.
Am I on the right track? I know Ive got alot more reading to do but these will clear up alot of confusion for me.