I have to go out to Petco today and get sand and silicone for my pico project as amazon said april 22nd delivery for me.. I used to ONLY go to my LFS's , but they disappeared one by one and the ones that are left are either overpriced, don't have what I need, or the owners/employees are useless. easier to order online thru amazon after doing research, and if I don't like it no hassle returns even if tested for a bit.