No it wasn't. It was no more hard SF than Star Trek or The Orville or the original BSG.
It started out as a hard-SF series. You can see that in the worldbuilding notes the developers posted online. But when the original showrunner Robert Hewitt Wolfe was fired halfway through season 2, his successors didn't care as much about science and the hard-SF elements were increasingly abandoned. In season 3, only the episodes by Zack Stentz & Ashley Edward Miller maintained the original hard-SF sensibilities, and once they left at the end of that season, there was no longer any effort at scientific credibility.
It's a profound mistake to generalize about all of Andromeda as if it were a single uniform thing. The show it ended up being was totally different in conception and execution than the show it started out as in its first season and a half. It's the same thing I said about Earth: Final Conflict above -- the plan that Rick Okie developed for the show at the start was completely abandoned after season 1.
The problem was that Majel Roddenberry went with the wrong studio. She wanted to make intelligent, plausible, sophisticated and thoughtful science fiction of the sort that Gene R. had aspired to; but the studio she ended up with, Tribune Entertainment, wanted inexpensive, lowest-common-denominator action adventure, something that could be made on the cheap and was simplistic and flashy enough that it could be easily translated for lucrative overseas markets. So both Roddenberry shows started out as two of the most intelligent SF shows of their era, but tragically ended up transformed into two of the dumbest. For E:FC, only season 1 was true to the original intent, yet signs of the decline began to appear in its second half. For Andromeda, the first season and most of season 2 were true to the original hard-SF vision, within the bounds of what the low budget and limited production values permitted, but late season 2 and the final three seasons (aside from the Stentz-Miller episodes) abandoned that and became a completely different, far worse show.