If you're using biobizz lightmix soil, you probably wont need to for the first 21 days, .. but if you wanna get it the habit of mixing nutes i'd be 1 litre of water with 1ml of grow (i know .. such a skinny diet .. but she's only little and there's nutes in the soil)
Don't feed that tiny seedling one whole litre .. it will never drink it. I'd be feeding every other day with about 1/2 a cup of water at this point.
Hope this helps
Blue ^_^
EDIT: .... OR
Follow this advice from Duck Commnader (the OP of this thread .. i've saved his feed chart in smy stash)
My Bio Bizz LightMix Feeding Schedule
Week1 day 4
Bio Bizz Grow 0.5ml,Bio Bizz Heaven 0.5ml Per L
Week2
Grow 1ml,Heaven 1ml, Alg A Mic 1ml per L,
Week 3-5
Grow 2ml,Heaven 2ml, Alg A Mic 2ml per L CalMag 1 feed per week 3ml per 5L
Week 5
Grow 3ml,Heaven 3ml, Alg A Mic 3ml, Bloom 2ml per L CalMag every other feed 3ml per 5L
Week 6
Grow 3ml,Heaven 3ml, Alg A Mic 3ml, Bloom 2ml,CalMag every feed 3ml per 5L
Week 7
Grow 3ml, Heaven 3ml, Alg A Mic 3ml,Bloom 3ml, CalMag every feed 3ml per 5L
Week 8-10 week Pre-Harvest
Grow 2ml, Heaven 4ml,Alg A Mic 3ml, Bloom 3ml, CalMag
Week 10
Heaven 4ml,Bloom 4ml, No CalMag
Week 11
Plain Water (I have done this with out plain water and extended Week 10's feed till harvest day doesnt affect taste or smoke)