Currently, I have a red sea 240 gallon fish tank complete with 4 reefLED 90 lights with mounting arms, a reefer skimmer 600, and 2 units of reefwave 45. I have a heater on the way along with a circular air stone. I also have all the water tests ready along with all the proper nutrients and conditioners plus I had a good recommendation to use an acrylic sheet for a cover that lets light shine through. The only thing I really need is a budget substrate. Preferably sand since I plan on getting kuhli loaches and they have soft underbellies but I also want something dark colored to make my other fish feel more at home. There are good substrates but the all cost insane amounts! I was told to use blasting powder like black beauty or black diamond but they are not available in my location for a decent price unless I'm willing to pay $200 for 50 lbs. Anybody know one that actually costs less than $1 per pound?