Hey i want new substrate for my tank.. which is better, sand or gravel?
In respect to
1. being easy to clean
2. planting stuff
Is it true that bacteria grows on gravel over time? so do i have to take it all out once in a while to clean everything ?
Thank you
In respect to
1. being easy to clean
2. planting stuff
Is it true that bacteria grows on gravel over time? so do i have to take it all out once in a while to clean everything ?
Thank you