Used Saltwater Fishing Tackle

I thought of making a new tank (the minnow) and was looking into the 4 tanks biorb gallon. Are they good? are they worth? What is the best value for a stylish 4-gallon filter? anyone has experience with them please share!

Biorb tanks are fine for their size, but they are too small for most fish, including minnows. If you want to keep minnows, I recommend at least a 30 gallon tank. A long tank is better than a high volume of the same: the long hall gives the fish swim over and gives the water more surface for gas exchange.