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Old 06-03-2005, 04:48 PM   #1
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Advantage between PC - VHO - MH

Can somone please explain that big difference between the 3
I have noticed thru pricing and research that MH are the most expensive and the best.
PC seems to be 2nd in price and quality.
For some reason VHO I can not seem to get a good reason why they are not as good as PC or MH...yet the price is cheaper.

I am also assuming that wattage is not the only factor needed to base on when choosing lights??

I have determined that I need about 360watts for my tank to allow me to keep just about anything I want. Right?
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Old 06-03-2005, 04:54 PM   #2
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pearsont74, I am so glad you asked this question! I too would like to know the answer. I have also heard that one of the sponsors in the Sponsor forum has the best prices online for lighting. Can someone point out who that sponsor is for me please?
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Old 06-03-2005, 05:11 PM   #3
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Shannono...look at hellolights.com....they have cool retro fits for good prices
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Old 06-03-2005, 05:30 PM   #4
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Ok well heres what i have found from research on lighting. First off you have to know what exactly you want in the tank. If you want a reef then what size tank you have. IMO never go by watts per gallon to determine how much light you need.
MH produce light at a single point(like a light bulb) and are very intense. Best lighting if you want SPS or any kind of coral that need high lighting. Clams also are good example.

PC are good depending on what kinds of coral you would want....best usually to be used with soft corals....(mushrooms etc...) Not as intense of lighting since wattage passes through a tube dispersing the light, which makes it harder for the light to penetrate and less intese in anyone area compared to MH

VHO are generally consider about the same as PC. I have used VHO and had great sucess keeping soft corals leathers, some LPS. And they give you a really nice look to the tank.

I am currently using 3 25watt MH on my 125gal tank and would never go back or buy anything but MH just because i like the look and knowing that i can have any coral i would want to put into my reef. If your using a tank that is less deep then you can get by with lower lighting like VHO, PC, and T5HO. I have seen a couple tanks with T5HO's on their tank and look awesome and are a better choice IMO that VHO or PC's.

There are also different kelvins of bulbs that you can purchase. The lower the K the more yellowish the light will look. 10k for example will be more of a brilliant white (daylight look). 14k and 20k will have more of a blue hue in the spectrum. If running MH i would recommend going with either 10k or 14k and supplement the attinic or use 20K and not necessarily have to supplement attinic. (thats what im using.)

HTH
Garrett
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Old 06-03-2005, 05:45 PM   #5
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ok....Im thinkin of a retro kit and gettin 2 MH and not sure if I should go with 2 PC or VHO....or 2 T5 or NO??
I'd like to have the ablitity to get whatever I want....of course once my tank is mature.
I honestly think I was told wrong on the size too.....my measurement are 18t x 48l x 28w
Using the calulator on this site It says I have about 105 gals? LOL
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Old 06-03-2005, 05:46 PM   #6
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It seems like VHO is usually more expensive to start with compared to PC, but the VHO bulbs are cheaper in the long run.
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Old 06-03-2005, 05:49 PM   #7
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price wise on hellolights they are maybe 20 different on them....
should i go with 175 MH? or more?
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Old 06-03-2005, 06:47 PM   #8
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Quote:
...they have cool retro fits for good prices...
OK, I have to ask. What exactly are retrofit kits?
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Currently under construction:
90 Gallon SWFOWLR
Marineland Sedona stand and canopy
80 pounds of aragonite sand, 20 pounds live sand
MagDrive 7 pump
SeaLife protein skimmer
VisiTherm 250Watt heater

List of possible fish:
2 Ocellaris Clownfish
1 Royal Gramma Basslet
3 Neon Blue Gobies
1 Yellow Eye Tang
Several Blue Reef Chromis
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Old 06-03-2005, 06:53 PM   #9
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Retrofit kits are the ballast/bulb and reflector. They might have the mounting hardware too. It's basically the blood & guts of the lighting w/o the plastic canopy thing.

This is used for people who have a nice canopy who want to attach the lights directly to the underside. I have retrofits
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Old 06-03-2005, 06:54 PM   #10
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for people that have customer hoods....retrofit kits are just the guts of the lights...reflector, connectors and ballasts.
It allows u to custom add lights to your already custom hood
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