When do I start flowering and switch to 12/12 New and First Plant

That depends on many things. First off, welcome!

Genetics plays a huge role in how much the plant will grow once 12/12 is begun. I like to top mine and grow multiple tops and get them bushy. I also like growing plants that do not stretch too much once bloom has begun.

No matter what, I think you plants are a bit too small to flower. Keep them growing, read a bunch here and keep asking questions when you can't otherwise find the answer. In time you will be blooming and know it is the right time.

I hope this helps.

Plant looks nice. I'd say let it grow a longer and let it get stronger before you start flowering. give it another week or so (depending on how fast yours is growing).

Looks like your plants need some more light and it looks like it needs more soil it needs to grow more roots replant it and youl see the difference from 2 day's on

ozone50 said:

Looks like your plants need some more light and it looks like it needs more soil it needs to grow more roots replant it and youl see the difference from 2 day's on

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Yepper stem to spindly. More light. Closer to the plant. Have to have a strong stalk to hold big bud. And Howdy form Montana