Be careful with Excel, it can actually make some low-light plants like anacharis melt.
Are you able to use root tabs or osmocote plus capsules? When you're just starting out I think Flourish Comprehensive and some type of substrate fertilizer is all you need for low-light, then if your plants don't seem to be thriving you can add in other things. I just started using Iron because it came with the "Plant Fundamentals Kit" Seachem sells..
And yeah, Comprehensive includes a little bit of everything but is very light on macros. The bottle recommends supplementing your supplement with their Flourish Nitrogen, Flourish Phosphorus, and Flourish Potassium for your plants NPK needs
Last edited by Wayne Dwops; 01-22-2013 at 02:17 AM..
Reason: Added info