Kevin Says
Member
I didn't say it is not significant savings. What I said was it takes years to get your investment back in LEDs. You said yourself that it will be roughly $1800 for LEDs. It takes 6 years to recoup.
Electric bill
- Thread starter SkunkerX
- Start date
I didn't say it is not significant savings. What I said was it takes years to get your investment back in LEDs. You said yourself that it will be roughly $1800 for LEDs. It takes 6 years to recoup.
Kevin Says
Member
I have not seen any math yet from our LED expert.
Herbie
Banned
Tbonekilla
Member
Watt for watt they produce the same heat but they way MH and LED's conduct and transfer their heat are entirely opposite. MH is equivalent of a heat lamp at McDonalds warming your fries. The reflector reflects all the light and heat downward towards the tank. The LED conducts it's to the back of it then carried away via the heatsink and fans. Thus they heat your tank differently. LED's only heat your tank by possibly raising the ambient temperature in the room.
Tethered_Limbs
Active member
ooooooo
Sigh. Yet again you are using the wrong numbers.
We are not looking at the point in which leds pay for themselves...
We are looking for the point at which the price of running leds meets the price of running mh. Leds are more expsensive at first. The whole point was to find out how long it would take before the price difference of total startup and running cost between the leds and the metal halides becomes zero...
:/
Funlad3
Well-known member
Here's the presentation I did that sold my parents on LEDs. 
https://docs.google.com/presentatio...K3ylcH5nu4/edit?pli=1#slide=id.g120f7142_3_96
It'll take me another five months or so to pay them off, but they're already worth it for me.
https://docs.google.com/presentatio...K3ylcH5nu4/edit?pli=1#slide=id.g120f7142_3_96
It'll take me another five months or so to pay them off, but they're already worth it for me.
Herbie
Banned
Here's the presentation I did that sold my parents on LEDs.
https://docs.google.com/presentatio...K3ylcH5nu4/edit?pli=1#slide=id.g120f7142_3_96
It'll take me another five months or so to pay them off, but they're already worth it for me.
LOL, just like that commercial. Love it.
Tethered_Limbs
Active member
nice
In actuality its less than 9 months, but that probably got the idea across to your parents pretty well.
Its definitely nowhere near 6 years! lol
Well, there were some minor factors you missed that do add up. For example you didn't take heat into account (tank temperature, room temperature, chiller, ac, ect).
Its definitely nowhere near 6 years! lol
Well, there were some minor factors you missed that do add up. For example you didn't take heat into account (tank temperature, room temperature, chiller, ac, ect).
Kevin Says
Member
Mh dissipates heat through radiation. LEDs dissipates heat through conduction. I have already pointed this out. I am not just looking at the tank temperature, I am looking at the overall heat produced and cooling required.
Kevin Says
Member
Here's the presentation I did that sold my parents on LEDs.
https://docs.google.com/presentatio...K3ylcH5nu4/edit?pli=1#slide=id.g120f7142_3_96
It'll take me another five months or so to pay them off, but they're already worth it for me.
This paper does not take in to account that LEDs do not last forever. You will need to replace it within 4 years. Once you factor that in, LEDs are quite expensive.
Kevin Says
Member
In actuality its less than 9 months, but that probably got the idea across to your parents pretty well.
For most of us its incredibly easy to see with a bit of grammarschool math, but for some people they cannot understand it and think it takes 6 years! lol
Well, there were some minor factors you missed that do add up. For example you didn't take heat into account (tank temperature, room temperature, chiller, ac, ect).
Since the total cost of running my tank is less than $1800 for 9 months, I fail to see how I can start saving money in 9 months after having spent $1800. Is anybody else having trouble with this math?
Funlad3
Well-known member
I don't think so; I break even every nine months. Every nine months thereafter, I "break even" again, so I'd still be saving money. I might not be earning back enough for brand new LED fixtures (or I might be, I'd have to check. ), but I'm still at least paying less than metal halides.
), but I'm still at least paying less than metal halides.
kerber13
Member
Plus who knows where LEDs r gonna be? They could be super cheap. Ur proposing that there are $1800 fixtures which is absolutely plain and simply absurd. I will be getting 2 fixtures that'll grow SPS in my 120 which is 24" deep for $690. In 4 years that number could be $345. This technology is evolving everyday so u cant assume these prices four years from now.
Kevin Says
Member
I don't think so; I break even every nine months. Every nine months thereafter, I "break even" again, so I'd still be saving money. I might not be earning back enough for brand new LED fixtures (or I might be, I'd have to check.
I have some exciting investment opportunity for you.
Funlad3
Well-known member
It's addition. If you look at the cost to operate slide, LEDs become cheaper to use at just 18 months. Sure they may cost more initially, but replacing metal halide bulbs at over $50 (and sometimes over $75) a piece makes them more costly to maintain. Also, look at the huge difference in the electricity cost. At the end of four years (when you say the units should be replaced) the LEDs have already saved a grand over the halides. Couple the two sets of costs now. Over four years, the LEDs cost around $1500 less than metal halides to just turn on! Considering that my LEDs cost me around $610, I can now buy 2.5 sets or five units with the money I've saved by not using halides. Throw in a chiller, and the cost of halides increases. For me, and others I'm sure, LEDs are a lot cheaper to run than metal halides.