The disks aren't for me. I've tried them in the past and they just do perform like I need them to. With the smaller quantity of nori that I use now, and the method of delivery that I have chosen, a feeding stick, I've found something that works perfect for me. My fish don't touch the disks, and they are expensive to boot.

I have been feeding some of my fish the Two Little Fishys Green Seaweed sheets, and I am almost out. I see that it is also available in purple and red seaweed. Do some varieties of fish prefer different colors of seaweed?

I feed 1/2 sheet every day to a 5" SF Tang, 5" Foxface, 3" Dwarf Angel and a 3" Ruby-headed Wrasse. Takes them about 3/4 hour to eat it. I alternate between red, brown & green nori.

when I had my four inch mimic tang I fed it a $5.00 bill size of nori a day.
Super7

I am feeding 1 sheet every 2 days. Everyone in the tank gets in on the action including the clowns, six line wrasse, lawnmower blennie, coral beauty, and 2 tangs.

Wow, I'm nothing near those amounts.

Have Purple and Regal Tangs plus a Foxface all about 4-5", along with 2 Damsesl, 3 Clowns and a Six-line Wrasse. All I feed is about 12sq inches of Nori, 1/8Tsp pellets, and if I crushed it up maybe 1/4-1/2Tsp of flake daily. Odd time I'll add some Mysis or Selcon.

Fish are all healthy.