Aqua-Zodica
Aquarium Advice Apprentice
I have a 20 gallon FW tank that has a few problems, here's one. THis was my first tank, and Ive learned that I shouldnt have done some of the things i did back then around 5 yrs ago. I was never really sure if i was going to get plants, so i picked a substrate gravel that consisted of large pebbles. They were like 1-2". Now, I am revamping this tank, and im wondering if I should change the substrate. The bed is around 5yrs old, and altho the plants are doing OK, I dont belive there doing the best. I was planning to use Onyx sand or Onyx gravel, which one. THnx for help, Im new here but have been keeping fish for 5 yrs.