Cheers for the comments folks.

Earthy - That link you posted doesn't work but I might look into C02 at some point.

Invision - Yeah, I know what you mean, they do look a little small. I think that's down to 2 factors. First, I probably could have vegged them longer because of the LST. Secondly, the pots are not as large as those I used before. To be honest, I took a much more laissez faire approach to this grow. I wasn't as obsessive as my first grow.

Still, I'm quite pleased with the results, nice and crystally

Jedi - 4/20 harvest? It's a possibility.

The weather is starting to get good over here and I'm nearing harvest. It's going to be a great Summer imp: