Hey friend. Thought I would answer your question properly. The reason pistols turn colour to early it's because of feeding to high. I dont like to see pistols turning red or brown until the 5th to 6th week in actual flower. From your diary if your running 5.8 ph that is for soiless grows. Dirt grows in veg is 6.3 ph and flower is around 6.5ph. Flower nutes are also stronger so if you keep overfeeding your going to end up with some pretty small bud. Check your runoff ph and ec, get them to proper levels for dirt grow. Cheers
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