Hey Monkey Man,

I'll jump in and agree with the last 2 replies.. Especially flushing about every third watering (me, feed 2-3 times, water flush). Your root pics look great for week 5 and I don't think you have any worries. The larger leaves turning color (or dying) the last few weeks of flower is normal, when and how much just varies among different strains. The only other advice I'd add is to possibly start tapering down the strength of your nutes in weeks 6 and 7. I also thought the strength you mentioned mixing earlier was a bit high. Using a 2 part base, I tend to never go over 2.0 ml per litre of either the A or B solution (maybe 2.5 on strains that like a bit more), which is 1/2 of the recommended strength of the brand I use. With my water, this yields a ppm of ~900, with additives I jack it up to about 1100 on the top end. If you're mixing without a meter to measure the results, going a bit lighter on the nutes is much safer and will help you to avoid problems. Also in regard to pH, adding nutes typically reduces it so always balance as the last step.. sorry if I was redundant on that one.

Good luck!

Peace, Farmer Rich