I'm thinking of starting a new shrimp tank for the shrimp that I want to selectively breed. I have a 50 gallon tank that has blue velvet shrimp, and I want to separate the non-culls so that I can reinforce the traits I want (blueness).
My question is- has anyone tried using volcanic rocks as a substrate? It seems like eco-complete soil is basically the same thing.
Would straight-up volcanic rocks affect the pH? Or other water parameters? THANKS!