Any experiences with BioSun PNS?

TeapotMaster · 2026-08-02T13:16:52-0400

Hello all,

I’ve been using PNS for some time now and believe it is a fantastic product. However, I am hoping to find cheaper alternatives (and hopefully do so without culturing a bag of farts in my apartment).

BioSun, a US-based pond product supplier, sells fairly large and inexpensive bottles of PNS, which they label as for pond use and suitable for all fish. Amazon reviews include some from reefers.

I would love to know if any of y’all have any experience with this product.

https://biosun.us/store-2/p/golden-mist-cup-ht3wm

Randy Holmes-Farley · 2026-08-02T13:19:30-0400

Might not live in seawater?

TeapotMaster · 2026-08-02T13:30:01-0400

Very much possible. BioSun does not specify which PNS strains they use. I emailed the company to see if they would share this info.

I assume that if strictly freshwater strains were used, using this product would result in a mass die off that would have significant impacts on water chemistry. And assuming online reviews are legitimate, I would expect to see some negative reviews.

But I am not ready to pour a bucket of assumptions into my tank :)