Hi Beglian Haze,
I think yours are growing healthy, 8 days are still short, give more patience to them! ;) Here I would like to give you some suggestions of indoor grow autoflower:
Hours of light
On the internet there are many different opinion on this matter, varying from 16 to 24 hours of light each day. We favour 18 hours a day. So from the beginning to the end of the life cycle it's 18/6.
Soil
Autoflowering cannabis seeds enjoy airy soil, relatively low on nutrients. Standard pot plant soil is not suitable for autoflowering cannabis seeds (actually, not for sativa's and indica's either, by the way...). It's much better to buy your soil at a specialized growshop. Always go for the ´Light´ mix.
If you want or need to mix your own soil, you could start with a simple basic recipe such as:
- 3 parts compost
- 3 parts peat moss
- 2 part perlite, pre-wet
- 1 part vermiculite, pre-wet
Nutrients
During the first 12-14 days you won't have to feed your plant anything but water. After this period you could start adding growth nutrients, the light type. Continue this until the plant has been flowering for a week. This will amount to about two weeks of giving growth nutrients. Flush well and then switch to flowering nutrients for about 4 weeks. Again, use the light type. About a week before harvesting you can stop giving nutrients.
And please remember, don't feed them too much. Commercial producers of plant nutrients tend to advise very high concentrations of nutrients for your plants. We usually use a lot less, especially with autoflowering cannabis strains. If the bottle reads 20-30 ml per litre, we will use 10-20 ml per litre.
Size Of Pots
Most autoflowering cannabis seeds will not become very large. So really large pots are not advised to use. You could use pots varying in content from 3 - 15 litre. The larger the pot is you use, the more roots the plant will make, the higher and larger your plant will be. Of course there's a limit there. In our experience with most autoflowering cannabis seeds 15 litres pots are the limit. Every extra space it gets is basically useless. It doesn't harm your plants either by the way.