i have just got anew tank ,ihad a 60l but got a72l this time,as i dont have much space,anyway, i want my new tank to have a sand bottom ,but dont know how deep to put it, its goin to have just corys in it, and wanted to know the best amount ov sand for them example, i inch etc, also ,how many cory ,do u think i could put in my 72ltank ,ONCE ITS CYCLED ,


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