I am planning to buy a 180 gallon tank within the next few months for my tinfoil barbs. The four are a little over 8 inches and live in a 70 gallon tank. They are a bit over 2 years old. I have never measured them yet, they may be a bit bigger or even a bit smaller than I think. Since I am likely going to college in 2 years, I might not want to set it up for until I can get my own house or something, or I could leave it at my parents house I suppose. BUT regardless they will need a new tank eventually.
NOW for my issues.
1. How many tinfoil barbs would fit without overstocking? I hear 6 is considered minimum for most schooling fish. Is 30 gallons per fish enough? Or does that leave plenty of room? Bear in mind that any additional barbs would be around 2 inches at first.
2. Would it be possible for me to put another kind of fish in there? The fish I have my eye on are:
-*Giant danio*
-*Rosy barb*
-Featherfin catfish
-T-barb (they show up every once in a while here)
-Hornet Tilapia? (unsure on this one) ...*Convicts!*
3. If it would be possible for 2 species to co-exist in a 180 gallon, which would be the best tankmates; with temperature, aggression and waste in mind?
4. What plants taste gross enough for the barbs to ignore? Bladderwort and java moss are the only 2 I have heard taste awful to fish.
Here is my idea: rockscape with large bad tasting plants in the corners, 4-7 tinfoil barbs and then a LARGE school of 5ish inch fish (or 1-or other very small number of one of the 3 larger kinds ) I do 40% changes weekly already and don't mind heavy maintenance. I might also get a tank a bit smaller or a bit larger than 180, my range is 120------280. That is what they have at the aquatic superstore. PS I will try to get a filter that produces as strong of a current as possible.
**I might have to grow the rosy barbs/giant danios/convicts for a few months so they don't get eaten, depending on the size they are sold at. My 70 gallon could be used easily for this purpose. Either that or I could keep them seperated with a divider for the first few months.**
If anyone can help with any of my questions that would be cool. I don't know any real stocking laws except "1 Oscar for 55 gal min no other fish" and stuff like that.

