Hydrated AQ500 this evening, by way of comparison. No contest....the northern BG ate it, but response was lackluster when compared to the last few evenings. The HBG fed well, better than they have on the new feed.
After I finished scattering the AQ, I went back with some hydrated new feed in the native BG ponds and business picked up. It seems more evident that my northern BG much prefer the new food over the AQ, but I think it's still too early to call it conclusive.
Nevertheless, I find myself wishing I didn't have three bags of AQ500 to use up. If the claims of better nutrition and longer BG lifespans hold up for the new feed, I see myself switching brands. I'm also thinking I will leverage my decision to hand feed vs. automatic feeder, by hydrating whatever I feed from now on. I think the fish take it better, and that's what it's all about in my eyes....getting the feed into the fish, not just on top of the water.