I have found from experience that a non fertilized soil less mediums are what works best when running a nutrient line such as you are running. If you are in the UK I do not Know how available sunshine or pro mix are. I do know that sunshine mix#4 is what most professional outdoor or indoor growers use as a medium that way you have total control over the feeding schedule. And stick with the dutch pro nutes bro get her dialed in and you will be rewarded with awesome plants in the long run. A/Nis getting expensive that is why I am doing a comparison grow with Green planet which looks like it will be just as good if not better because Green planet is a quarter the price made in British Columbia Canada and just down the road from A/N's home site which that and a bitcoin will get you a coffee LOL. I hope that green planet will be the way to go so far looking very good. That being said what I have seen done with dutch pro it is a top line nutrient you just need to dial in your ph and ec on your first few grows and I do not think it is very expensive either and bob is your uncle. well enough of a ramble
Hey Fairlynew. I am in Oregon and my friend owns a grow shop so I can get what ever I need and the have pro mix and almost all of the quality organic soils et. I use happy frog right now and I am switching to a looser soil,happy frog packs down really tight after awhile and my fault for not adding perlite. You will like the GP I have a good feeling you will get very similar results enough as to justify not spending almost double.I always dial my ph in every drop gets ph'd that is the basis on which you build your plants health for sure and the one thing people over look. I will look at dutch pro too i am always up for new avenues to try. Let me know how you like that GP bro. Peace!