Interesting discussion guys!
Hydrophyte - No fish yet (not sure what might be a good fit yet and I only have about 5g of water to work with) I am using treated tap water for WC's that is somewhat hard water and top off with RO water during the week to keep the TDS in check. So I am just am dosing light ferts for now.
Maybe a small school of CPD's, or a Betta or a Dwarf puffer - decisions decisions...
Yep even with a small tank like that there are so many options.
Like I mentioned you don't have to worry too much about ferts until the plants really start to grow. Light ferts sounds great for now.