No, the under gravel filter was starting to come out of the sand, so I had to rebury it. But in order to do so, the water, sand and rock had to come out so I could rebury it.
Yeah, lesson is to ensure I check what the water is before I remove stuff, and then check again prior to putting fish back in.
Yeah, lesson is to ensure I check what the water is before I remove stuff, and then check again prior to putting fish back in.