Good morning Mr Am4zing those plants are looking great whether you're happy with the soil mix or not. Just a couple of things that I would like to mention here as you're looking around for new soils or nutrients.
First of all I used the Advanced Nutrients line up for my last grow and could never understand why I had to stick to 2ml of each Micro, Grow and Bloom throughout the grow whether in veg or bloom, it seemed counterproductive in my eyes, until I read about the Lucas Formula. I think they seem to be using that formula for their base grow kits and I also think it really works. That Plushberry batch that I grew using their nutes didn't give me too many problems and turned out to be one of, if not the actual best of (quite possibly could have been the best) smokes I have ever enjoyed in 29 years of smoking MJ. I've actually switched my chemical grow that was using Canna Vega/Flores back to their nutrients lineup as I really didn't think that the Canna nutrients could cut it in comparison.
My only problem with their lineup is that it isn't organic and as I am trying to go fully organic I can't be pushing chemicals into an organic soil. I will continue to grow with their nutrients though until they run out, but I would also be tempted to buy them again as the plants do seem to love them.
As for soil I now have one plant in bog standard soil, one in my own mix, one in Plant Magic (but only repotted into it from bog standard soil as a seedling) and one in Canna Terra Pro (directly from seedling). The difference with the plant in Canna Terra Pro is astounding! I planted two Dark Devil Auto seeds at the same time but in separate soils, but if you saw the pictures I just had to take yesterday when I saw them you would think they were planted a good week to ten days apart. The one in CTP is so far ahead of the other plant that it's impossible to deny what a difference it has made. In fact it's caught up to plants that were planted weeks before it. Now obviously it's not been a full grow yet so I can't conclusively say "this soil is the dog's bollocks" but what I will say is "this soil seems to be the dog's bollox, try some!"
Seriously mate it has kind of blown me away. I haven't had chance to get an update up yet as it's pretty busy here at the minute but if you like I can grab a couple of phone pics and send you them over. I was dissatisfied with the B&Q soil anyway but realistically if I can buy something like this for my future grows it's a no brainer for me.
Apologies for the long post I just wanted to go into detail rather than just say "yeah use this it's the shit" kind of thing (no disrespect intended to those people of fewer words than I), and plus a picture is worth a thousand words. So let me know if you want me to send a comparison shot from the phone as I'm hoping to update today but still not sure if I'll make it. All the best
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Looking awesome mate 
CannaTerra pro + it is definitely a great soil I use it straight out the bag no added perlite it's free draining enough for airpots. but I do add worm castings. The only problem I have is fungus gnats love it too 
