These new models are gelcoated and have thicker sidewalls!Raise tilapia, shrimp, tropical fish, etc. Rigid, 5-mm fiberglass is easy to clean. Blue color shows scratches, but the tanks are sturdy and nestable for economical shipping. Add a filtration module to instantly turn the tank into a quarantine, holding or growout system. Tanks ship motor freight. Usually in stock for immediate shipping. FOB Orlando. Note: Add 5" to each L and W dimension below for outside dims. Crating charges not included in prices when applicable.