Join Date: Jul 2003
Location: Charlotte, NC, USA.
I've got a 4 gallon cube w/ a 13 watt bulb right over top. I'm growing hairgrass like mad with pmdd dosing and excel.
3 ottos, 1 platy and a bunch of snails. You could easily do 2-3 male guppies.
The fish-per-inch is more for basic tanks with no plants and less maint. than most of us will do. I've had 200 1/2"-1" pleco fry - with the parents and a few dithers - in a 20 gallon tank. No deaths and I fed heavily.
Don't put 10 fish in there, but you could do 3-4 with 2-4 shrimp and you would probably be just fine - provided you have good plant growth, a filter to back-up your tank in case the plants crash and stay regular w/ water changes.