Advise on lighting for a 125g - The Planted Tank Forum
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post #1 of 18 (permalink) Old 07-18-2013, 02:47 AM Thread Starter
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Advise on lighting for a 125g

I currently have 8 13w Screw in Cfl day light bulbs for plant growth. Think there the 6700k ones you can get from walmart or lowes. I was wanting to add additional lighting to my tank as the 8 bulbs just aren't enough. I was wanting to add some led's. I found a light bar i was looking at and interested in is a marineland double bright led fixture.

I was wondering if the 60-72 inch fixture would add a better par reading at deeper parts of the tank and allow me to grow higher light plants. As of now i can only grow certain low light plants o_O.

I was even considering two of the 36-48 inch fixtures for my 125g. I will be keeping the 8 13w cfl bulbs in the canopy while adding the new fixtures.

Amazon.com: Marineland Double Bright LED Lighting System for Aquarium, 48 by 60-Inch: Pet Supplies Amazon.com: Marineland Double Bright LED Lighting System for Aquarium, 48 by 60-Inch: Pet Supplies
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post #2 of 18 (permalink) Old 07-18-2013, 03:42 AM Thread Starter
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If you have any advise on other lights that would be efficient for my 125g (72 inch long, 21 inches deep, 2 inch substrate) that would be great. I'm open to idea's I have a budget for 150-200$. Wanna try and get a more natural light look with a shimmer if possible while also hitting the medium to high light level for plants.
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post #3 of 18 (permalink) Old 07-18-2013, 02:08 PM
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Hi,

If you replace the CFL bulbs with something more powerful, let's say 18W or 23W? It could be a viable solution low budget.

Michel

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Last edited by micheljq; 07-18-2013 at 05:40 PM. Reason: typos
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post #4 of 18 (permalink) Old 07-18-2013, 05:22 PM
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Those marineland lights will have very low par at that height. You can go dual 36" Ray 2 side by side and that would give med-high light but it's not going to be $200. Micheljq's suggestion is the best for doing it on lower budget. Put 24w CFL's and you will go up to high light most likely.
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post #5 of 18 (permalink) Old 07-19-2013, 03:17 AM Thread Starter
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interesting. Someone told me the same thing about the 13w but it turned out to be wrong. The lights are like 10 inchs above the water by the way.
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post #6 of 18 (permalink) Old 07-19-2013, 04:18 AM
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Quote:
Originally Posted by fuze_drinker View Post
interesting. Someone told me the same thing about the 13w but it turned out to be wrong. The lights are like 10 inchs above the water by the way.
The person that told you about the 13w most likely didn't assume that the light would be at least 26"+ from the substrate so that makes sense. They are way too high above the water to give you what you want. People that run 13w CFLs have them a couple inches above the water on a shallow tank.
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post #7 of 18 (permalink) Old 07-19-2013, 05:44 PM
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Quote:
Originally Posted by gus6464 View Post
The person that told you about the 13w most likely didn't assume that the light would be at least 26"+ from the substrate so that makes sense. They are way too high above the water to give you what you want. People that run 13w CFLs have them a couple inches above the water on a shallow tank.
+1

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post #8 of 18 (permalink) Old 07-20-2013, 03:25 AM Thread Starter
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so you think the 24W would work? or should i look for a higher wattage one?

I was thinking about maybe hanging some t5ho fixtures in it with the CFL's
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post #9 of 18 (permalink) Old 07-23-2013, 03:09 AM Thread Starter
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Problem! So i go to lowes buy 8 23 watt bulbs. Come home go to unscrew one bulb and realize i already had 23 watt bulbs in the sockets...

So I'm back up a poo creek without a paddle again...

So the 23w bulbs just arent getting me out the low light level. Advise on a cheap fixture to add that will help boost me into the medium and high light levels of par.
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post #10 of 18 (permalink) Old 07-23-2013, 08:15 AM
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How about you just lower the light closer to the substrate? Why does it have to be so high?
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post #11 of 18 (permalink) Old 07-23-2013, 08:47 AM
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i saw a 120w 6700k bulb at a safeway the other day
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post #12 of 18 (permalink) Old 07-23-2013, 03:21 PM
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Originally Posted by gus6464 View Post
How about you just lower the light closer to the substrate? Why does it have to be so high?
+1 : 10 inches above the surface, try putting them 3 inches above the surface or closer if you can, it can make a big difference.

There are 40W CFLs bulbs, don't know if they are pricey at your location, at that point, T5HO can be a better option, or one or 2 good led fixture like a Finnex Ray 2DS, depending on the light you want.

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post #13 of 18 (permalink) Old 07-23-2013, 07:56 PM
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Go To Aquaticlife.com thay have T5HO for $95.00 ReBuild with a 1 yr gar.
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post #14 of 18 (permalink) Old 07-24-2013, 01:14 AM Thread Starter
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I have them mounted that high as they are mounted to the top of my canopy. if i move them down to 3 inches above the water id literally have to rewire the canopy and other stuff.
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post #15 of 18 (permalink) Old 07-24-2013, 02:44 AM Thread Starter
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looking at 8 65 watt cfl's. here are the specs. Lemme know what you guys think. I'm also gonna purchase 2 polished aluminum reflectors that are suppose to increase the amount of light off the bulbs by double. Gonna see how good they are since they are 22$ a pop.

Specifications
Stock Code: FC65-S65
Part No.: FE-IIIS-65/65K
Voltage: 120
Bulb Shape: Spiral
Dimmable: No
CRI: 80
Diameter: 3.54 in.
Life Hours: 8,000
Start Temp. (Min): 0 Deg. F
Warranty: 12 Month
Case Quantity: 20


Brand: Precision Lighting
Wattage: 65 Watt
Bulb Color: Full Spectrum Daylight
Base Type: Medium (E26)
Color Temperature: 6500 Kelvin
Length: 8.39 in.
Incandescent Equal: 250 Watt
Lumens (Initial): 4000
UL Listed: Yes
Order Code: SL65/65K
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