Mixing Sand with gravel
im going to set up my 20gal high light tank soon, and wondering if my subrate will be ok. Basically im gonna use JBL aquabasis mixed with some other concentrated iron containing powder (probably clay and something else). On the top i ll use 1mm quartz sand mixed with 2-3 mm dark gravel, basically cuz i think it looks more natural (i know at the end the garvel will cover the sand, but still), and if im not wrong sand doesnt compact that much if gravel is mixed with it. (Or am i wrong?) Will this substrate be ok?