why do you want a tetratec, i have never heard a godo comment about them while ive heard many many bad comments about them, they are very noisey, they will dissipate alot of co2, if power goes out and they dont cut back on the builtin heater with shatter, emperors make too much movement for a planted tank, id go with an eheim or if you cant afford one a fluval (both canisters) they have great filtration and can be positioned to make little surface movement