[Seattle_Aquarist]

Hi Demi,

If you go with compact florescent bulbs a 36 watt 6700K is about 17.5" long. A 2X36 watt DIY kit would be about 17.5"L x 7"W x 2"H not counting the enclosure. Here is a link that might help: http://www.ahsupply.com/36-55w.htm

 

[Seattle_Aquarist]

Hi Demi,

It would definitely improve the brightness of your tank, and help your plant growth. Look for bulbs with a spectrum of about 6500K or a "Daylight" rating.

That being said, these type of compact florescent bulbs are not the most efficient in that you will not receive the full benefit of the wattage they are using. With the bulbs shown, some of the light is lost due to "Restrike", where the light from one tube is blocked by another tube either directly or after bouncing off the reflector. A linear tube, like a T5, with a parabolic reflector will provide more light per watt, but will cost more of course!

 

[Seattle_Aquarist]

Hi Demi,

I am able to grow swordplants with 2.5 watts per gallon, CO2, and PPS-Pro fert dosing. I also use Seachem Flourish Tabs because swords are heavy feeders. But I was not able to get dwarf hairgrass to grow in that tank. Try it, see if it works!