Regulated eh? As in keeping a specified amount of fish poop in the water? Any one who's ever owned and cleaned an aquarium knows how "clean" the water is.

Fish spas are some of the most unhygienic place you would put your feet into. Sitting in a row with 2 or more other visitors of questionable backpacking background will leave you vulnerable.

Having a none healed wound on your feet will make it even more risky.

I have seen such spas in Khaosan shooting up and lots of visitors dangling their sweaty Trotters in a collective 4x8 ft pool, swarms of fish ( and their feces ) floating around. 

How can these conditions be called hygienic?

If such contaminant water enters one's bloodstream one can imaging what will happen.

Of course there are other factors (personal hygiene for example ) contributing, but dangling your feet in such waters isn't helping the problem, to say the least.

On 9/14/2018 at 9:46 PM, ezzra said:

Ok.. if you have an open wound or compromised skin issues that you're openly inviting infections just about anything and everywhere you go and do, and sticking one wound into a fish tank is not helpful and simply asking for troubles...

Who knows. Maybe she had an infection and subsequently passed it on to other users of the spa.

In any case, her story is not credible and hardly timely.