Watch Tarek El Moussa and Christina Haack Prepare to Tackle 'Monster' Pool in 'Flip or Flop' Series Finale

etonline.com:

Tarek El Moussa and Christina Haack are going out with a bang. The final project they embark on for the  series finale includes a «monster» pool that's better described as «a sink hole.»El Moussa, Haack and their trusted contractor, Jeff Lawrence, are all taken aback by the massive work in the backyard that features a gargantuan pool that clearly needs a ton of work and will prove to be expensive.

In a sneak peek of the final episode, dubbed «Spanish Lessons,» El Moussa initially guesses that fixing the pool alone will be $10,000 because it'll need to be re-plastered and re-tiled.Lawrence guesses that, because «this thing's a monster,» it'll be more in the $13,000 ballpark range.

Upon further inspection, El Moussa and Haack also notice cracks, prompting El Moussa to say, «This is not good.» Haack responds, «It's like a sink hole.»That being said, Haack remains optimistic about the challenge ahead.“But look on the bright side," she says before El Moussa chimes in that fixing the pool will increase the home's value. «Yes, that too but we also get to do a fun design like that cool gloss tile or, because it's Spanish, maybe a cool clay tile.»El Moussa shoots down Haack's creative suggestions while walking away from the on-camera interview, leaving Haack alone, smiling and telling the camera, «What about a water slide?

Oh, I know. A waterfall!»El Moussa and Haack in previous flips have tried to pull off the elaborate Spanish design while keeping costs at a minimum.