Hello there everyone!
Substrate change: From gravel to black sand
But, I've searched every petshop here in our place and can't find any that offers sand
So I thought that maybe I should try the hardware, and actually got some!
It's called Albay Sand here in our place. I asked the people around the hardware but they really don't know where it comes from or what it is made of, they just said that it is just being delivered to them.
Also, I asked an established aquarist and he said that albay sand is really good especially for planted tanks.
But still, I want to consult to you guys. All I can provide is pictures, maybe some of you are knowledgeable of it. Thank you so much!