"桶槽的租费" can be translated as "rental fee for tanks" or "lease cost of tanks" in English, depending on the specific context and the level of formality required.
"Rental fee for tanks" is a straightforward and commonly used expression that clearly conveys the cost of renting tanks.
"Lease cost of tanks" is another valid option, which might be more appropriate in formal or contractual contexts, where "lease" often implies a longer-term or more formal rental agreement.