Thanks. I now they include minor trace and that is why I'm afraid it might not be for me.... This is one of the reasons I decided to abandon Triton in my tank, which also requires equal dosing of the components because of the mixed trace elements. I ended up with Calcium above 500 and Mag close to 1500 to get Alk at the required 8dKH level. Of course, the concentration of the Aquaforest supplements may be different and the ratio closer to what my tank consumes. I may need to check it. One question (General, not just for component 1+2+3+): dosage of AF products is based on Tank volume, or total System volume?