Review on Seachem Stability Fish Tank Stabilizer: Optimal Stability for Freshwater and Marine Aquariums - 2L / 67.6 oz by Heidi Reese

After contacting Revain about an overdue shipment, they were quick to send an updated replacement. Nevertheless, one star remains for sending expired materials for the first time. I've been using Stability for quite a while now and am getting great results. It does a good job of creating beneficial bacteria in aquariums and in filters. Product received on time. Ordered a large 2 liter as the price was less than ordering a smaller size. now i know why This is 01/03/2021, the goods were manufactured on 10/09/15. It's difficult to read the last 2 digits of the expiration date, but the Seachem website clearly states a 4 year expiration date. Simple math says it expired on 10/09/2019. I will try to contact Revain support and hope for the best. There is no time to send it back and wait for another one (which may also be overdue).