Heres some quick shots of the tanks mis counted found out he gave me an extra one so the total is 5 now. the tanks are 40 gallon breeder tanks. i am already looking and the next size in the tanks or pond designs. would be it hard to make a divider for a pond? they are around 8 - 10 inches . i am worried they would injure their back if i put them in something too large. i am going this weekend to look at horse troughs as an option too.