For your own protection, we recommend that goods that are to be returned, are sent via a recorded delivery service with sufficient insurance to cover the cost of the goods. Cons: Make sure to dose into the filter. If you dose straight into the water column it forms small "squiggly" like material that floats around. It settles eventually. If you dose into the filter it still creates white dust like particles temporarily but not as bad. It will not hurt your fish if they eat it. The water is not clarified mechanically by a filter system alone. Special bacteria are required for the conversion of ammonia to nitrate, which find a large space in a sufficiently dimensioned filter system. With the use of Tetra SafeStart, the aquarist creates optimal conditions for good bioactivity in the aquarium. A widespread opinion that predominantly the bacteria of the Nitrobacter group are active as nitrifying bacteria in the aquarium has been scientifically refuted. In natural biofilms from aquariums, Tetra Research was able to identify the bacteria of the Nitrospira strain as the predominant representative of the nitrite-reducing bacteria. The ammonia, which is also very harmful to the fish, is broken down by bacteria of the genera Nitrospira and Nitrosomonas. The latest discoveries in microbiology ultimately led to SafeStart's product development. Optimal conditions for the settlement of these important bacteria are achieved with Tetra Bactozyme. It covers all surfaces with a bacteria-promoting biofilm on which nitrifying bacteria can develop. Tetra Biocoryn complements these products. If a product fails during the first 6 months, Aquatix-2u Ltd will cover the return costs. After 6 months the cost of returning the product will lie with the customer, as per the Consumer Rights Act 2015. Also, if you have tried other products that I don't talk about here, please feel free to post your thoughts on those as well.

All our electrical products carry a 12 month guarantee or longer if specified by the manufacturer. Products that carry a manufacturer’s guarantee can be returned, if faulty, to us for repair or exchange as necessary during the guarantee period. Bithimala yes I have used all with inverts. I have 3 nerites and few ghost shrimp in my tank (and hundreds of MTS). In my other small tank I have a betta and fry, none of these products should be harmful to any aquatic life.High nitrate levels can encourage excessive algae growth, which can make the aquarium look unsightly. Unlike other nitrate reducing products, which need regular recharging and replacing, Tetra NitrateMinus is simply added weekly to the aquarium. Also unlike many ordinary nitrate reducing products, NitrateMinus does not need to be added to a filter system to work, but is simply added straight to the water.

Nitrate is a natural end product of healthy biological filtration, and may also be contained in tap water. High levels can encourage excessive algal growth, which can make the aquarium look unsightly. NitrateMinus reduce and controls nitrate, for improved water quality and better algae control. Any personalised items or items made to your specification cannot be returned, e.g. off the roll pond liners, cut to length pond hose.

Should you wish for the delivery to be made by instalments a further agreed carriage charge will be applicable. Items that are perishable also cannot be returned. This includes, fish food, pond and aquarium treatments etc, if the seals have been broken. Items returned that are not deemed to be faulty or the fault is not covered under the guarantee will be subject to return postage costs. Damaged on arrival? Should any damage be identified upon or before opening the parcel(s) you should notify us within 24 hours of delivery and advise the exact damage.