I'm in a bit of a pickle.. I'm upgrading to 450G and the water storage tanks I have all have openings on them that are too small for the circulating pumps I have; i'm unable to mix the salt water Does anyone have any large troughs that I may borrow to mix water? I need about 200G worth of them to make sure I have enough water when the new tank arrives this week. Thanks in advanceD8179950680