Join Date: Apr 2011
Location: 47° 31' 49" N / 122° 1' 53" W
One of my tanks is a 2.5g. (my icon) I love nanos except it is near impossible to prevent water parameter fluctuations. The slightest evaporation/fertilization/room temp change will affect your tank. I would suggest next time you get a petco/petsmart cupon in the mail go get a Zoo Med 501 filter...or go with a cheapy HOB. The 501 is a good little canister for nanos, mine runs very quiet. Space is a premium in a nano. If you stick in a internal filter at least 15 to 25% of your space is taken up.
I just give my 2.5 a smidge of ferts once or twice a week that's it. The plants that you listed are not too demanding with ferts...the micro sword might not grow in sand/plain gravel set up without some juice and excel it will appreciate more light also. In my grow out phase I was pumping CO2 and running a 27w and a 13W over a 2.5g. Now the 13w is removed because I was tired of trimming everyweek.