When should i start nutrients?

When should i start nutrients i have a white widow thats 3 weeks under t5 lights and clones that are a month old also under t5?

The picture below
White widow on the top left and the right all clones bubbalicious

Id start pretty soon.. Mine is 15 days or so and she's getting slammed and loves every second of it..

What kind of dirt ?

It depends greatly on what medium you are growing in. I use PRO MIX HP and introduce nutrients around 10 days or so.

soils differentiate on when to introduce nutrients but I would say by now would be a good time

Good point RayRay. Sounds like your plant is ready for some nutrients. I would start slowly adding them. I've found the bigger my plant gets the more it wants.

Izoc666 said:

What kind of dirt ?

Click to expand...

I second this question. Allot depends on the medium.
Not only will the kind of soil mix your using make a difference as to when to add more, it will also dictate the difference concerning best nutrients to add and amount of ppm's.
Some soils have NO nutrient value and leave it entirely to you, while most try to cover that with just a few feedings of something extra and some water. Judging from the picture, I would bet that the soil your using already has nutes built in. What is the NPK value of the soil?