[Black oranda]

I have sand now, and i've been told this isn't the best substrate.
What could i add to make it better?, Pictures might help aswell...
My tank size is a 15 gallon, any help would be great thanks.

 

[Darkblade48]

Small, pea-sized gravel (about 2-3 mm in diameter) is a good choice, or, if you're willing to invest, you could look into fluorite (it's a product by Seachem)

 

[ShaneSmith]

Sand might compact on you. It might be best to add a whole new substrate. If all is well and it is an established tank i would not worry about it. But if there are issues ADA now imports through the Senske's so maybe some Amazonia soil.

 

[Black oranda]

The tank is doing well, and the plants seem to have done better since i changed from gravel to sand.....

 

[Raul-7]

What do you have under the gravel?

 

[Black oranda]

Sorry... i might have confused you. Its only sand. nothing else.

 

[ShaneSmith]

I dont seea reason to worry about it then. Its all about personal preference.