I've had this since January and bought it new. I've had no problems until tonight. I did my WC and cleaned out the sponge and now for some reason it won't turn back on. Any tips or advice? My husband is going to flip if we have a broken filter. 

I just did the exact same thing a month ago! I freaked out when it wouldn't turn back on. I took the whole thing apart and when I put it back together it worked.