API Stress Coat Water Conditioner 64 fl.oz, Pack of 2

Use this product for outside koi pond and aquarium Love it keeps fish healthy

I add water to my 5,000 gallon pond on a weekly basis. Mostly due to evaporation from my waterfall. I only use API Stress Coat in my pond.

great company AAA++++

Have used this product for a while and recommend. Good price.

This product killed all my fish. I used it during water changes and it kills all the beneficial bacteria, my tank clouds up and only the hardiest of fish survive. DO NOT buy this product

The product is what it it says it is. It’s worth the price and it was delivered on time.

Fish told me they love it

I recommend it if you water change your koi pond

We have used this product for many years. I think my fish like it

I’ve used this product for years every time I add or change out water. Never a problem with my koi. They’re more active after use.