I dont think anyone can say 100% yes, but itd be more filtered than whats coming out of your tap. Id go for it. Your water is safe to drink now, which should mean itd be okay for your tank, but the city has said there could still be 'sediment' in the water. (which is why I'd be concerned) Id say its better than not using RO of any kind. While you are there, check to see if they sell the 5gallon 'pre-bottled' water. That might be better being that it would be pre-flood water.
Honestly though, if it were me, I'd feel comfortable using the culligan water. Its really your call though.
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 175 Gallon Tank, 33 Gallon Sump, 2 x AI COLOR SOL, Leather corals, colts corals, several brain corals, misc frogspawn, misc sps corals, purple tang, yellow tang, naso tang, hippo tang, 4 clown fish, 5 clams and many many inverts
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