With 16 goals scored and 16 points from seven games with just one defeat, Slomka says Frankfurt are worthy rivals for a place in Europe next season and he has warned his team not to underestimate them.
"Frankfurt can beat anybody," he said. "They are a team with a lot of quality."
Yet the situation was similar when the sides last met at the Waldstadion, with Frankfurt also flying high at the start of 2011.
Hannover won 3-0, initiating Frankfurt's slide down the table which eventually resulted in relegation to the second division while the Reds marched on to a place in the Europa League, only narrowly missing out on a Champions League berth.
"I can remember that game well," said Slomka. "It was (goalkeeper) Ron-Robert Zieler's debut and (Germany coach) Joachim Low was sat in the stands, and he was very impressed with Zieler's performance.
"If we can play equally well this time, then things look good for us. Certainly that was a big lesson to Frankfurt."
It is one they have learnt from and, after a year in the second division, they are now working like clockwork, according to their coach Armin Veh.
"We don't really have any bad moments even in training anymore," he told the Frankfurter Allgemeine newspaper. "We pass the ball well, our movement is good and so too is the effort.
"That makes it a joy to watch us and our level of football is improving all the time."
However, they find themselves in the unfamiliar situation of coming into the game after a defeat - their first of the season.
Whether Veh makes any changes to his side remains to be seen, but he has no injury worries to contend with, nor does Slomka.
"We like to have this competition for places," said Slomka. "With the number of options we have in attack, we are able to vary things."