I have an aqueon water changer I've been using for a few years and the hose has 2 kinks. Any suggestions on how to get rid of the kinks? I thought about picking up clear tubing from lowes but it's really thin walled and will kink as well.
You could try hot water to reshape it or you could buy the coupling they sell and cut out the bad area. The problem with adding the coupling is there is another place to leak.
Perhaps try some hot water in the are of the kink and slide a tight fitting pvc pipe and just epoxy/ silicone it over the kink to keep it straight. Assuming it isn't like super bad