corals and LED light.

Agreed, heat from top side, optics to "correct" the light spectrum ect. but one MUST consider cost factor.

Let's compare apples to apples- NOTHING beats Mh over 24" of water depth- at the present.

Do not for one second think I am against LED lighting- I am not, I just want what I need to provide for my critters- not what some add exe. states that I need.

The problem is - an American defense contractor own the patent for these type of LED (see the PFO law suite) and this is the only reason we don't have cheap reef lights. Until this is solved.........

Till then MH it is.

 

^ What LEDs(PFO lawsuit)???

 

A good link you have there, Los.

For even deeper tanks we have the Canon LED pendents, by Exotic. They put on a good show.

EX-6801 Premium Aquatics - EX-6801

 

i agree, led's on anything under 20 inches is great, but deeper than that their gonna cost you hundreds in coral and to just buy halides since they dont do the job.

 

BTW- 2 MH bulbs per year at 65 bucks each (xm 20k's), that is $135.00 a year (w/shipping). On a good ballast set up, electrical cost in my area is about $120.00 per year to run.

So that is $255.00 a year total cost.

Do the math.

 

That didn't make any sense. Using correct grammar would help.

 

OK, triple my estimate on the cost of MH then. lol.

 

40 degree provides better penetration than 60, but you then need more of them to cover the same area..... So, efficiency is reduced with the 40 because more of them = more watts. I think still more electrically efficient than a MH, but not yet more cost efficient. The replacement costs and reliability are still a bit fuzzy to me.. Even if I assume that they will last forever, I don't seem to keep fixtures more than a few years before I change tanks to something that requires a new fixture to cover a different dimension. of course that has to do with me, not the lights, but still the replacement cost arument can only go so far regardless.

 

the halide people will never agree with the led people, both lights have their ups and downs i just happen to favor halides, like what you will

 

What is so funny? You need 240 watts of LED to cover @ 20 inches of depth, so lets say you use a 250 watt MH instead of a 400 due to lesser tank depth- you stilll loose in over all cost factor.

LOL all you want, in the end you loose and my tank is happy while you are spending days figuring out what you did wrong. Mh has more CORRECT coloration second only to T5/T8, and for good reason- you need to consider this when you make your point of no merit.

Reminding you that nor do you have any experience with either MH or LED.