I have added TMC NutraSoil as my substrate to a dwarf Puffer tank. Once the tank is cycled and ready to add fish i had hoped to top with sand. Do we have any good reason why the tub says not to not top with gravel - im assuming that includes Sand? i understand it might be they just want you to use more substrate. i just wanted to check for sure if it was safe or not.
Cheers Chris
Cheers Chris