Consider this, you are currently running 900 watts, and 10x80 watt will only give you 100 watts less heat and power consumption. For that size tank there is no need in 3 fixtures, and really no need in a 400 watt bulb. A pair of 250 watt bulbs and a reflector designed for covering a 30x30 area, like the LumenMax Large, would allow you to run 500 watts and all it will cost you is two reflectors.
man just switch to led's and end all problems
Your point is well taken on just having the two bulbs instead of three on. I have noticed a significant drop-off in my colors in the middle of my tank when my middle 400w is not fired. The 2x250's just don' t provide enough coverage and intensity across the middle of the tank unfortunately.
Saving on electricity (900w vs. 800w) is supplementary to having more controls on my color spectrum. Regardless of wattage, I would save money on electricity, because of how much more heat the MH' s produce, causing my chiller to run more. That would be my hope/expectation at least!
That statement couldn't be further from the truth.originally posted by joey125.
If you are wanting any of the good stuff, youre gonna need more than t5's.
Quote:
Originally Posted by tbettis
man just switch to led's and end all problems
What reflectors are you currently running?
The reflector makes all of the difference, some work well at putting light straight down, some are best at spreading the light evenly. The LumenMax Large is designed to cover a 30x30 area evenly with light, which is why I suggested them, a different reflector will not be able to do that and some waste light and that isn't what you want.
This article will give you a better idea of what purpose built reflectors will do, the LumenArc and LumenMax large will do what you want, the others will not.
http://www.advancedaquarist.com/2009/1/review
There is zero problems by going with T5 but unless you drop back to a 4' fixture, you will not be gaining any electrical or heat savings. What you already have is more than enough in the correct reflectors for the job and the Hamilton 14K has enough par to do the job but you don't really need the 400 watt. You want to get the light into the tank the best way possible, not throw a lot of wattage at it that be wasted.
Thank you for your thoughts, I certainly have some things to ponder... my guess on looking around is that I may have cheap reflectors.
I like the idea of bulb-scaleability with 10 T5' s to create more diverse color patterns. however, it is also pretty interesting to just replace two reflectors for $200. Not sure which direction I am going to take this.
Just a thought, why not do the 2 reflectors and also add 2 or 4 t5's for some color pop as well as having some flexibility with. Olof choices and dawn dusk.
Hanging canopy for the ultimate universal fixture/furniture! No cooling problems, easy to work in the tank, and last but not least, you can try different configurations. Mh/t5, t5/led, mh/led etc... Glwt
LET retro from reef geek, it is a proper setup with the right ballast, reflector and endcaps.