Saltwater Powered Light

Perhaps maybe someday our tanks will power themselves, until then here's a Saltwater powered spotlight.



Green House Co Ltd will release an LED lantern that generates electricity with water and salt.

The lantern, "GH-LED10WBW," does not require a dry cell or rechargeable battery and emits light when water and salt are put in the lantern. It can continuously generate electricity for eight hours per charge of water.

To use the LED lantern, 350ml of saline water containing 16g of salt is made by using a dedicated water bag. When the saline water is put in the lantern, it functions as an electrolyte with a magnesium (Mg) rod (negative electrode) and a carbon rod (positive electrode) inside the lantern.

The luminous flux of the lantern is 55lm. The Mg rod can be used for up to 120 hours of power generation. The lantern can be reused by replacing the Mg rod, which is separately sold.

The generated electricity can be used not only for lighting the LED but for powering other USB-powered devices by using an accompanying USB cable. There is no manufacturer's suggested retail price. The lantern is scheduled to be released in mid-September 2012.
Source

 

So does that mean that you have to refill it every 8 hours? If so, I wouldn't think that it would be very efficient. Maybe if they made some with a bigger water storage capacity and made them last longer, then it would work better. It's still a very good idea, though

 

Yup every 8 hours, but keep in mind this is generation 1. LEDs have come a long way, I bet we will see technology incorporated into our tanks in the next 10 years.

 

Mag and Carbon Dosing at the same time. Win/Win!

 

I can't wait until that happens ;D

 

not only do you have to refill the water, you have to replace the magnesium rod? either way it is very cool technology and i'm sure it will continue to become more efficient just like LED's have.

 

I'm more talking about incorporating this technology into the reef aquarium. The light needs to have water in a tank to be mobile, since our tanks are stationary the probes could sit in the sump area.

 

I'm sure the cost of the Magnesium rods will outweigh the cost of running LEDs. Considering the rods will last 120 hours / 8 hours a day of lighting = 15 days.

 

It's only a first generation, I am talking about the concept not the exact technology used here today.

 

That's fine, though I question the power output of the system.