Yes mate I use it all the way through except seedling stage. 1ml per litre. Best way to do it is add silicon first, pH will shoot up to about 9.5, so pH down back down to 7 then start mixing the nutrients.
I'm using Dutch Pro A + B base nutrients, Buddhas Tree Metaboost, not sure which PK to use this time, I used Rock Resinator last time. Ive got some Shogun PK Warrior, I'll probably just use that. I think you use that from week 4 till 7. And then finish off the last two weeks with just Shogun Dragon Force.
Oh and last time I used an additive with the Golden Lemons called Botanicare Sweet Citrus, its supposed to really bring the Limonene turpenes out. This time I'm using Terpinator which apparently really enhances the turpenes, making them smell and tast more and increases the trichome production. We shall see, I've heard really good things.