Even if it is a half gallon, i have a powerhead strong enough for a 3-4 gallon tank. I also crammed as much coral as i could in here, it could probably stock a 1-2 gallon tank. You shouldnt have to spend more than 150 if you want to cram a 3 gallon with coral.
Yeah I have a 5 gallon hex that just got free'd up after I transfered the betta to my new 20g. I could drill that since it is acrylic, I just need to find some good light, but I am also looking at going with a 10g now and have come up with some curious lighting options..... Any suggestions for lighting if I go with the 5 g hex? I saw that there is a 9" PC made by coral life and the tank is 11" across so I would have to fabricate some legs for it.