TetraFilterActive filter starter with highly active Live Bacteria, supports biological activity in the aquarium, accelerates removal of harmful substances, optimises cleaning performance of the filter, various sizes

Makes a good supplement to achieving an effective filter bacteria.

I've seen a noticeable difference since using this in my aquarium, which is a fluval flex. The tank water smells less, the water looks better, there seems to be less waste around and the fish seem brighter and happier. I'd got some very low level issues with the water testing and it seems to have resolved them. I am using it for all partial water changes and this is my second bottle now.

Seems to work, keeps the smell away and only needs to small caps in a pretty big tank, I have turtles so if it works for them it will surely work in a fish tank.

Fishes in my tank are healthy and I don’t really need to change water regularly after applying the bacteria which will dissolve the toxic nitrate generated.

l am very happy thank you

Thank you have now done the tank it's great. Many thanks for sorting my issue out. And Many thanks for speedy delivery

It’s good bacteria for your fish tank and always good to have in when doing complete clean of tank and filters and so easy to use

Came I a plastic bag. No instruction included, even at the back of the bottle is stated for us to see the enclosed leaflet