The visitors almost took the lead within 15 seconds when Mark McCammon just failed to meet Nicky Southall's cross, but the hosts had the best of it after that.
Tom Craddock produced a moment of magic two minutes before the break when his superb turn left Mark Bentley for dead, but the former Middlesbrough man then saw his 18-yard shot bounce back off the far post.
Gillingham held on for a share of the spoils after the interval and Harford said: "It's two points lost but I'm proud of the players - they were brilliant. It's the best performance of the season over 90 minutes against a team who tried to run the clock down from the first minute.
"For a side in the top six I find that bizarre - it's the first time I've seen that. We were the only team that tried to play football and created chance after chance, I'm just disappointed for the players and fans that they didn't get the rewards for the football they played.
"They were first class in tricky conditions. I can't say any more about them than that. I've said to the players that we've got to go on an unbeaten run now until the end of the season. If we do that and we put in performances like we did here we'll stay up."