When you blanch the veggies try to do it the shortest time possible to achieve the desired results, because the cooking does break it down somewhat and some of the nutrients are lost.
I like to do it for fresh peas because otherwise I can't get the skin off, and they won't eat it with the skin on.
Zuchinni and yellow squash go in the tank right out of the fridge, because three juvie ancistrus will turn one half of it into a skeletonized husk overnight. I have not gotten myself a mag float yet, but I use a suction cup clip (Nemo style) at the bottom of the glass. .