So 2 of my plants are 2 and a half weeks old now, I did give them mild strength nutes twice now and was wondering , is it time to start giving them normal strenght nutes yet? and how often should I give them when they are still young like this? And with Co2 Im gonna use the carbonated water way, does a plant need this in vegetation? I watched the green guys video and he dosn't mention it in vegetation but I just wanted to make sure. tnx.

You should never go to full strength unless the feed is made just for cannibis ( hard to find ) you should only use about quarter strength of what the directions say. After about a month you can feed every time you water. Co2 good question no idea?

Most books will tell you to use a feed higher in N than P and K for veg. growth. I have found that a lot of our friendly neighborhood growers use 20-20-20 for veg. and 10-30-20 for flowering. Its all trial and error bro

the nutes i have are all from heavy harvest they are

Micro 2-5-10
Grow 7-0-4
and for flowering
Bloom 3-7-8 (wil be added with micro of corse)

it says 8ml of micro and 8ml of grow (for veg) for every 4 litres of water for mild. so sould i only use 2ml's?

but in a month should i use a 1/4 mix of normal mix ( 18 ml's of micro and grow) ?

Those sound like hydro nutes. I think Trich was talking about growing in soil when saying to use less.

Are you in hydro? If so, then use half of what the label says, and increase when the plants need it.

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u are better off waiting till u flower your plants before u star using co2. i have seen better harvest wieghts using co2. but all the other factors (temp, humidity,ventilation, light, and fertilizers) must be in good order for the co2 to be effective, or u will just be wasting your money

It is my understanding to start the co2 after one week of growth. Co2 is cheap, at the most it'll set you back is like $100.00 for one grow. personally I am trying the product from co2boost.com, cheap, easy and safe.

No I am growing in soil. But I think the nutes are for soil.

I have a really cheap Co2 method that seems to be working. Cant regulate though. Get a bottle and tape it up with duct tape so no light gets in, seal 1/4 tubing on the lid. Mix some yeast sugar and warm water. seal the bottle tight and that creates c02 just run the hose to your plant. Some fish stores sell applications for aquariums that work this way. The only thing is you dont know how much c02 is produced and need to change it every week or 2. but if you need a cheap temp solution there you go.