Quote Originally Posted by DogtowN
Tying it down is better than topping at this stage. I think you will be fine with those 2 strains though. The lemon should be nearly finished stretching and I've never seen a blue-cheese stretch very much beyond 2 weeks.

One thing I've done before is hang something like a X-mas ornament on the top to weigh it down just a little, once the top starts getting heavy it will start sagging a little bit on its own.
Good idea, I did the same with a 4 oz Ling Cod fishing lure.