My wife has experienced the same change in her flow, much heavier than before we had kids. She is healthy, eats only organic from our farm, no hormones or birth contol pills, and I trust anything out of her body over something store bought. Sorry to gross some of you out, but blood and shit are the best organic fertilizers there are, call it guano or meal or whatev, you know what it really is! I will flush the plants towards the end of course, plan on using a dilluted mix with water, and will probably do it every 28 days as is provided fresh. I'll post my results later. Thanks