But see, even close to 20 years ago when the original ZZ Strains first started over to the states, they were already wet pets my Blue Monkey was psychotic..... I get the idea of the biotope for the flowerhorn. But in the end, it will be more for you then the fish. They just wont benefit enough to warrant it. Sand or gravel for them to dig and a toy. That's all I think they need.