Are they on a pellet diet now? If not, it may take a few tries to find what they like. I’m a firm believer in feeding “the best pellet that they will eat”.
A couple of mine eat Zupreem natural and have done well on it. None of mine would eat Tropican when I tried to feed it - but I have heard that they are a good pellet. Two of mine will eat Roudybush, and one will only eat Lefaber pellets. I have also tried a couple of different Harrison’s pellets, which mine won’t touch - and I used to feed TOPs until something changed in the texture and now none of my birds will eat them.
Can you obtain free samples of each, or purchase in small quantities? Appearance is key with many birds, and Zupreem Fruit Blend is generally well accepted.
I too switched to Harrison's and the entire flock loves them. Was concerned as they hated the monotone Zupreem Natural. Harrison's conversion protocol was totally effective!
I have 2 sweet budgies, Nimbus and Banana. They are both boys Nimbus is 17 months and Banana is 11 years old though I've only had him for about 3 weeks. would write more but that's the max
I don't know much about tropican but I do know a decent amount about zupreem. Zupreem is definitely good as long as you use their natural or veggie pellets, their fruit pellets are filled with sugar and dyes. overall zupreem is good but not great and they use a lot of added vitamins and minerals instead of using ingredients that actually contain the vitamins and minerals naturally. I recommend tops as its one of the only pellet brands that doesn't use corn or gluten as a base and its really healthy, but the only downfall is tops pellets are quite large and hard so some birds don't like them.
Look closely at the ingredients of both and you dont want or need sugar, colours, anything artificial, look up those funny and long names, avoid soy if possible, choose an organic if poss, as TOPS off the list that leaves Harrison's? Can you crush TOPs into other foods? Job done!
My G2 is a fussy booger but she likes wet food so has Harrison's HP Mash, cannot even get her to switch to Adult Lifetime, she throws it out even when mixed. G2's are fairly high energy birds and unwanted ingredients, that includes artificial vitamins can make bad behaviours worse, increase the likelyhood of over preening and plucking and possibly cause illness further down the line. Keep to a fresh diet if possible?