Calculating watts per gallon

[ricky07]

Hello
I'm new to planted freshwater tanks. I have a 30 gallon 30"long 18"deep and 12"width. I have Corallife Freshwater 30" Dual Compact Fluorescent
lights. Do you use the standard division of gallons divided by watts to get watts per gallon on these compact lights?
Thanks in advance

[Ketso]

Simple math really. Divide the number of watts by the number of gallons. Thus, as an example, if you have 200 watts over a 50 gallon tank, (200/50) you would have 4 wpg.

[ct-death]

Do you use the standard division of gallons divided by watts to get watts per gallon on these compact lights?
Thanks in advance

Yes, and you can also do a basic 20W / square foot of surface area for planted tanks too.

Not sure if you want this, but here's a good general guide: http://www.plantedtank.net/articles/Basics-to-starting-a-Planted-Tank/4/

[Mgamer20o0]

http://www.rexgrigg.com/mlt.html

try reading that. its not really as simple as wpg but its a place to start.

[ct-death]

http://www.rexgrigg.com/mlt.html

try reading that. its not really as simple as wpg but its a place to start.

You found it mgamer2000!!! :D

Thanks! I have been looking for that link to bookmark :dance2: