I am new to this hobby so please forgive my niave question. I am adding CO2, (one bubble per second) 2.5 watts per gallon,(considering going up to 3.3) 6.8 PH and 3 degrees GH. 38 Gallon tank. I only have a GH test kit which indicates 3 degrees. I am interested in increasing my GH (and KH?). Do I understand correctly that 5dGH is the target? I am not sure of when to add sodium bicarbonate or calcium carbonate. I attempted to add calcium carbonate via. two calcium vitamin pills. I did not measure a difference after one hour. Also what about seachem equilibrium? When and why should I use this product? Do I really need a KH test kit also? Thanks, Randy ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/