my ph level has dropped to 7 now(tank 42x18x15), added some laterite as well to the gravel! hope this all works as i have new plants coming, seen some of the swords have perked up in the past weeks with CO2. The tank with no CO2 has some Ivy shoots and Malayan Swords shoots growing( which is cool) the ph 7.5 in the small tank 24x18x15....