Anybody Using House & Garden and Sunshine Advanced Mix 4?

All the way through 5 weeks of veg plants did good, then the problems started. I have leached since than twice and now am into 4 weeks of flowering. What my problem seems to be is I can't seem to get the PH in the right range no mater what I do. I am constantly fighting it. Anybody have the same problem. If so any suggestions would help. I'm starting another grow and just don't want to fight this again. Room temp is great around 76 humidity between 50 and 60 percent, nice fresh air flow, no pests that I have ever seen. I have to say I'm growing a sativa strain PPP and a plant I belive is indica strain. I have the indica in a different soil and is so much more healthy than the sativa in sunshine mix. All Comments welcome. My PH is always 7 to 7.5. Buds look good but the leaves look like hell on a couple of the plants, don't want to kill them. Another thing is I think they may be root bound. When I leached the 2 worst looking plants it took forever for the ph water to drain through, it's like there is no soil left and i'm in 5 gallon buckets. Used H & G roots excelerator and I think it might have been to much even though i followed the feed chart.
 
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