CaribSea ?

I am in the process of changing from a 30 gal to a 90 gal and I would like some suggestions on sand, I used CaribSea Seaflor special grade reef sand in my 30 gal, Its not a very fine sand and most of the suggestions Ive read suggest to use a finer sand becouse it holds more benificial bacteria or something. Ive read some things on the home depot sand and I dont think I will use that, So is the CaribSea Seaflor special grade reef sand good or is there other better sands?

 

Seafloor is what I would have got - I say stick with it.

http://www.3reef.com/fish/sitepics/caribsea.jpg

 

Im thinking the seaflor might be a little too big for sand sifters, im not sure.