Hi all I'm fairly new to this planted tank lark (about 2 months now), and having read about EI, it is now an avenue I wish to explore. As this place is a mine of information with a lot of knowledgeable people here, I thought I'd just check with someone before I started my dosing regime. The Nutri-calc calculator which was recommended by someone on here gave me the following results for a 180 litre tank. 2.66 grams KNO3 1.22 grams K2SO4 0.75 grams KH2PO4 6.89 grams MgSO4 This lot to be dosed Saturday (after WC), Monday & Wednesday and 0.47 grams Trace to be dosed Sunday, Tuesday & Thursday. No dosing Fridays and 50% water change on Saturdays. Do these numbers sound right to you people in the know? Also, is there anything else that needs to be added? I'm currently using Tropica's TPN+ and adding 5ml Easycarbo daily, so if I switch to dry ferts would you recommend that I carry on with the Easycarbo? These maybe back to basic questions for you guys, but it's all new to me :? Thanks in advance. Chris.