[beantickler]

I set up a planted tank with CO2 on Sunday(today)... When should I begin dosing my ferts?

 

[HungrySpleen]

im not a pro but i think now is as good a time as any, seeings how your tank is up and full of plants.

i believe the amount of ferts depends on if its low low-light or high-light

someone will correct me i im wrong.

have fun with the new tank

 

[Hoppy]

If fertilzers are needed, meaning, if you have high enough light for the plants to grow at a rate that requires fertilizers, you should start dosing them as soon as you set up the tank. Look up the Estimative Index method of dosing to see one easy to follow and very successful method for dosing.