hey i have a question i have crushed marble for the bottom of my tank it looks ok but i have seen tanks with sand they look awsome. i have 1 oscar 7inch's long another oscar that is still a baby 2-3 inchs three electric cichlids all about 3 inchs a blue one same size a jd 3inch's and two plecos about 5 inchs would sand be alright for them i dont need or want it to harm them thanks i will also search the forum too thanks

