I wouldnt consider stocking goldfish in anything less then a 20gal, and thats only speaking for the fancy variety, not the single tail, comet or feeder goldfish they would need atleast 40gals (im really not exaggerating) the common type get a foot long and the fancy variety easily get softball size (not including fins) that is if they live long enough to even grow (most of the time they die from poor water quality because they create soooo much waste)
I would stock like 3 guppies at first, then add 2 more in a few weeks, but really 5 gals isnt large at all.
you could probably get away with adding 3-5minnows then adding another 3-5 in a few weeks (once the cycle has stabilized but of course youd need to qt the others for 2 weeks before adding them)
If I was you I would set up a natural planted tank, that way it will have a better chance of having more stable water parameters
you can use very easy hearty plants such as anubias, rotala, java ferns, java moss, pennywart, water sprite and water wisteria.
all youd need for the lighting is a desk lamp from walmart (about 10$) and a package of 13Watt 6500k (package lists bulb spectrum on the back) compact florescent bulbs, im pretty sure a 3 pack is like 6$, and if youre only using 1 bulb then you *theoretically* wouldnt have to buy a new pack for 1.5years ( I usually swap then out every 3-6months, usualy closer to 6 if I use it for about 8hrs a day)
trust me, I have the complete opposite of a green thumb, I killed a freaking aloe plant, just to list one of the many many plants that I have murdered.
all of the plants I have listed accept for the pennywart (for some reason it just doesnt like me, but its incredibly easy!) I have managed to not only keep alive, but they somehow thrived!
as you can immagine I was incredibly hesitant to try live plants. the first live plant I ever bought was a bunch of water wisteria, just tossed it into my goldfish tank and it grew quite well just floating around, then i got more and more, and now i cant stand the sight of those ugly fake ones!
so to sum things up, aquatic plants are awsome!!!!! they provide shelter, more stable water params, a butiful tank, and even food for some creatures!
(please feel free to share what you decide to do!:)
Last edited by kjg1029; 05-26-2015 at 11:31 PM.