It seems that "The Real Housewives of Atlanta's" Phaedra Parks never has to worry about supporting her soon to be ex while he locked up in prison for eight years.

As Perez Hilton reported, "Apollo Nida is in prison for the next eight years, but that's not going to stop him from making some ca$$$h!

Phaedra Parks' soon-to-be ex-husband has started a new fitness biz, called Nida Fitness 4%. Why 4% you ask? Because an hour of the day comes out to about 4%!

Simple enough, right?

And the idea is actually pretty genius. It's a waterproof wristband that's also a USB with workouts on it. The band is printed with the words 'It's Only 4%' to keep you motivated."

Apollo is reportedly starting this new biz behind bars. Go see the vid for yourselves!

What do you think of Apollo's new venture?

Meanwhile, a source close to Phaedra told HollywoodLife.com exclusively that Parks' estranged husband has sent her a very rude letter after the "The Real Housewives of Atlanta" star would not accept his calls.

"He's so childish," the source said. "She [Parks] said, 'He tried to get me together by telling me what he thought about me and numbering each pathetic insult.'"

"Phaedra said that Apollo called her a b*tch, selfish, fat, conceited, and a wife that ain't loyal.

"He even told her that if it wasn't for their kids, he wouldn't care if he saw her fat ass ever again. He said it to her in a letter just like that," the source continued.

Parks and Nida have reportedly called it quits, citing Parks' unwillingness to shoulder a costly marriage once Nida finally goes behind bars as one of the reasons for the split.

Stay tuned for more "The Real Housewives of Atlanta" news here.