My parents have a tub with water jets that hasn't been hooked up to the water lines for almost 10 years due to fear that our well water will destroy the tub. I'm pretty sure we've got hard water and a sizable iron count. I really don't have the budget to put in a whole house system, so I'd like to know if I have any options for a smaller scale iron filter. (Ha! Sorry for pun.) My only goal is to get the water quality to a point that it won't harm the tub. I'll try and get the water tested soon.