Simply because a particular hashtag is industry related, does not mean it is going to help your business out.
As a business owner, you need to use analytics and you have to use the information that is presented to you to determine if these hashtags are helping or hurting your business. Simply because something is trendy (such as the #), does not mean it is right for your business.
By tracking this information, you are not only going to know when to use it, and when to leave it out, you are also going to know how to engage your followers to use the hashtag to ensure you are getting the most out of it.
More often than not, people are going to respond to the use of hashtags; it is simply a matter of finding out which ones work, what to use when to use them, and what to avoid posting. When you do this, not only are you going to see a major increase in the frequency at which your images are shared, but you are also going to realize a difference in the number of site visitors that are following you on Instagram as well.
So, learning the ins and outs of how hashtags work, using the appropriate ones and knowing how to use them, are some things to keep in mind in adding the hashtag to an image. Proper use will go a long way; but overuse, or improper use is going to hinder your growth, and may eventually lead to certain followers turning away from your business if they feel they are being exposed in any way.