True true, definitely a good point to make. Ik I especially do that with older more matured fish as they aren't really using the food to fuel rapid growth anymore like the Lil guys do. That and FH's have a very bad habit of over eating, if allowed, and are prone to getting bloat as they mature.Your FH is looking good. IME water changes are best left to a day with no food. Water changes can be a stressful event with some fish, and with changing water parameters, even if slight, I have always felt it best to not feed on the same day, certainly not at the same time. Fish don’t need to eat every day. I think that a weekly purge is healthy for a fish, just as intermittent fasting is for humans. Just something to consider. Good luck