Trying to restart my pool, and the flexible, heavy-duty tube we have running from the pump to the filter keeps coming off when I start up the pump. I have three ring clamps on it, and still it pops off (and shoots water everywhere). Any suggestions for why this could be happening this year (I did nothing different with my setup) and how to make it stay put. Do I need a new line? Is there an adhesive I can use? HELP!!