I have two freshwater tanks, both have hang on filters 1 aqua clear 1 cascade. I have a big problem all of a sudden. We are planning to leave for vacation tomorrow and last night our power went out while we were sleeping. It came back on and all was fine except the cascade will not refill by itself, the aqua clear was running fine. We are supposed to be in for storms the whole week we are gone, what can I do to make sure this doesn't happen again? I would love to replace this filter with a self priming canister eventually, but cannot afford one at the moment. Please, if anyone can give me ideas before tomorrow, I'd greatly appreciate it.