My experience has been that constantly nudging the base where it is attached to the rock(surface) with the tips of my fingers works well - use a little bit of your fingernails CAREFULLY so as not to harm it. I had a good tip from Erik from Aquarium Masters not to use a credit card or foreign object because you cannot feel if you pushed too hard. It takes a bit of time but worth it. The hardest part is getting your foot in the door- or in this case your finger underneath. Hope that helps...Adriana