Gee I eat brocolli & find it tastes good! Especially raw! Don't give up on it! My goldies really like it! Since I use lots of veggies in my diet my goldies get a good bit EVERYDAY. I chop raw veggies daily for myself & as I go I drop some in the tanks. So they get chopped brocolli, baby carrots, squash, zucchini & etc. I even give them pieces of cooked chicken or tuna (in spring water only the oil kind is well....oily! )
I have noticed that when I am in the kitchen chopping veggies they gather at that end of the tank waiting for their share!
Oh! I often use my electric chopper to prepare MY veggies! I find at the bottom of the chopper smaller pieces collect. I take pinches of that & put in the tank it ALWAYS causes a feeding frendzy!!

The fresh veggies never cloud the tank.

And have all the good minerals & vitamins!