tea for uk root probs??

Iv been suffering with browning roots and slime and wouold like to know what beneificial ingredients i can buy in uk to make some sort of tea for my oxypots. Iv managed to find great white online in uk and something called pondzyme but im really looking for aquashield. Can any1 in uk tell me what you used for your tea??

When i had a browning root problem i used peroxide. Try flushing your system and using the peroxide for a few days. It worked for me and my roots are back to white and strong