Oh, good on the cereal!!!

Sometimes, people feed them human cereal thinking they are doing something right when, in reality, is real bad for them. I have a sun conure that was fed cheerios as her staple food (no pellets, no seeds and, apparently, nothing else but cheerios because I am still trying to get her to eat produce!) for years and she ended up with borderline (actually over the limit but by a very tiny margin, thankfully) liver function so she now requires a special diet and liver supplements for the rest of her life. I don't know if you are aware of this but, if you are, allow me to repeat it, just in case: humans require high levels of iron but birds are the opposite and, unfortunately, most human cereals are 'fortified' with it to the tune of up to 45% in cheerios! The thing with iron is that the body has no way of getting rid of all that excess so it stores it in the liver which, in time, impairs its function. The condition is called hemochromatosis and there is no cure or treatment for birds.
Now, I will tell you what my opinion is about free-feeding protein food. In two words: not good. It sound rash but let me explain. Protein is needed for procreation and life so it's absolutely necessary for birds BUT, as high protein is not found easily and/or abundantly in nature in vegetal sources, all birds crave it. Nature set up this survival trait in them that makes them gorge on protein food whenever they find it (it's the same with fat and salt for us and that's why nobody can eat just one potato chip

), which is usually during breeding season. So, when you just fill up a bowl of protein food in the morning and do this all year round, even if the bird is a great eater, he will, most likely, end up eating too much protein and too little produce. It's not that birds don't know what is good for them, they do in the wild but that is because nature made it so they can thrive on their natural diet and their parents teach them. But captive birds have too much available of what is good and often overindulge - they can't help themselves because nature made them that way. Now, high potency blends have the highest protein and vitamin/mineral levels of all the pellets out there. They have recently changed the label because, when it first came out and for years and years later, Harrison specifically stated that this was food meant to be used only temporarily when switching birds that only ate seeds, were sick or breeding. But now they are recommending it for all birds all the time... I don't know why but I assume it is because they simply don't care and cannot be sued for it.
Now, if you want to continue feeding Harrison's, by all means do! Personally, I don't like any pellet but I will admit they are a very practical solution for the parrot owner. I would only ask you to consider using them only for their dinner because they are hungriest early in the morning and that's the best time to get them to eat a nice selection of produce and whole grains low in protein but full of good nutrition for them. I feed gloop (cooked whole grains and veggies) with raw produce in the morning and seeds/nuts for dinner. I have done a lot of research on parrot diets and have reached the conclusion that, so far, this is the best I can offer. And I have been feeding them this (the gloop recipe has actually changed a million times and it's still a work in progress) for a very long time and even though I have birds that have medical problems, they all do very well on it.