Super Skunk RDWC

So flower has seemed very slow. We are on day 60 of flower, and they are NOT ready. The past two weeks the pH has been dropping tremendously every day. I couldn’t imagine it would be a root issue since I use hydroguard and we have a chiller set at 67 degrees, plus the plants look healthy! So I did my research and tried everything. Finally I decided to go ahead and treat with hydrogen peroxide because nothing else was helping, and Bam! Stable pH! Lesson learned. I hope the plants now start putting on weight over the next week and maturing. I was hoping to flush in a week, but I will just base it off what they are telling me.