Wpg?

[TribeOfShroom]

I've just had a little read through the pinned thread on lighting and a few others, but I'm still confused. How do you work out WPG??? what factors do you have to add to the equation to get the answer??

 

[Esfa]

WPG is watts per gallon, so you have to divide the wattage by the gallonage.

for examle, if you have a 10gal tank with 30watts of lighting, you do 30/10 which gives you 3WPG.

 

[ulster exile]

Just remember that it's Watts Per US Gallons though.

 

[TribeOfShroom]

Sooo... 2 x 36W Aquaglo's = 72W of light. Divide that by 33g (US) (125L to you and me).

72/33 = 2.18 = 2.18WPG

Ok, so this is why my plants are doing good. But with this WPG, would I need to fertilise and how often?

 

[Themuleous]

For a tank of your size and light I would recommended EI (estimative index) check out the pinned thread on this very topic

Sam