As I mentioned in another post, I am remodeling my tank, Thanks to you opinion I solved the issue of the filter but now I am confused about the substrate.
I have this now:
** TOP **
River stones of 2-3 cm (1in)
Gravel for aquariums of 3mm
home made subtrate for aquarium plants (soil, clay,sand) and Azoo subtrate for plants
Originally the gravel was in the top but the axolots swallow it.
This is how it looks at the moment, but I still have to change the watter.
The question is:
Is this subtrate OK?
Is it better to use silce sand?