Also a little bit back to MTS...the longer i have the stuff the more i like it. IT IS AMAZING TO PLANT IN, you can simply place your finger on top of the root of your pant and press down...then as you slowly lift your finger away the substrate litteraly rolls into the divit, filling it in and securing your plant. Only thing left to do at that point is gently brush the crater ring down and you're set. Every plant i put in has already begun to grow new shoots and my floating plants are now getting culled by the handful daily. I'm certainly no amazing fish keeper but at this point I 100% approve of my chosen substrate...and just a reminder...it cost $75 shipped.