What material is the substrate made of?
What are the water parameters (these are GH, KH, pH and temperature, the GH, pH and temp may be involved)?
Have you tested for ammonia and nitrate especially, and if so, what are the numbers (I don't see nitrite being involved here)?
How often are water changes normally done, and what volume of the tank (not sure if the 70% with weeks after is it, or they are more regular)?
What are the water parameters (these are GH, KH, pH and temperature, the GH, pH and temp may be involved)?
Have you tested for ammonia and nitrate especially, and if so, what are the numbers (I don't see nitrite being involved here)?
How often are water changes normally done, and what volume of the tank (not sure if the 70% with weeks after is it, or they are more regular)?
