Do you know a good nutrient for indoor growing in soil ? From your experience...

I grow a blueberry strain inside in soil with HPS. It seems that my particular strain is sensible to over nute. I generally apply the nutes with a 75% ratio of the recommendation. If you have a good experience with a specific product let me know...

I'm in the process of trying General Hydroponics Veg and Bloom.
At full strength during veg and the first month of flowering, I was having to feed almost every water, so I'm thinking the 16-10-30 formula gets used up quickly and doesn't burn easily, but I'll tell you, it builds one helluva rootball, like when I used MG all purpose on my last plant.
Here's my Sour D. after almost 2 months veg.
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Here's my Purple Kush at the same time.

I presently use General Hydroponic FloraNova Bloom for the flowering stage. But I can't use the full strenght only about 75% of the indication. The result is good and it's simple, only one product to use. Also it's partly organic. But at your place I would start with 50% of the indication and increase gradually, also shake well the bottle.

You are not transplanting those soon enough, they needed a larger pot bad. Very healthy roots and plants though, nice.
I like Botanicare Pro Grow for veg and Pro Bloom for flower as my base nutes as well as the sweets Botanicare Raw and Original Berry is the best sweets out there GH sweets leave a weird taste and smell to the buds. For CaMg I like GO CaMg+ no extra nitrogen in it and it has molasses. The full line of Cyco nutes are bad ass but I use just the Potash and Swell great stuff makes buds grow like crazy.

I grow Aussie Red Beard and use house & garden soil a&b at a mix rate of around 75% as opposed to manufacturers ratio as now in week 4 of nutes the increase of 1 extra ml gave me a inch of burn on some of leaves and what looks like some associated clawing-curling but apart from that she loves it and in last 2 weeks has put on 5-6 nodes high fat branch collars and looking like hitting a growth spurt. The pics not great but you can see how crazy bushy she is and the nute burn and curling of leaves.
Also not a plug but my brother and family friend grow respectably using canna and products in the Australian GT brand range and they both agree h&g will be their next choice but in hydro and dwc crop.