stopping co2

  1. A

    Stopping CO2 in high tech tank

    Hi guys! I am in the process of setting up a new tank and here's what I have thought 1) I'll buy a 2.5 feet long tank roughly 25g 2)I want dense planting, basically, some swords, crypts, hygrophilias, anubias and fern 3) I want to carpet it with marselia (whichever I can find) 4) T5-40W light (I...