Thanks the tank dimentions and set up stats are 6x2x2 180gallons and houses 1x flower horn ( Jin Gang) 1x male gold severum 1x red devil midas 1x firemouth 2 texas cichlids 3 goldsaums. filtration i have is 2x fluval 404 canisters and i also have a fluval 300watt heater. I also have 2 48" aqua glo tube lights.
It's Yorkshire stone all i did was smash up a large peice to good shapes that i like and then soft sand them down so that there is no sharp edges which would damage the fish it dosen't even alter the PH in the water great stuff !