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Ammonia, Nitrate and Nitrite are all components of the nitrogen cycle, a natural process that is fundamental in an aquarium. However at high levels in freshwater or marine aquariums any of these can be lethal for fish, so keeping these at a balanced level is highly important. High levels of nitrate is also a common cause of algae blooms.
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For delivery before Christmas, orders must be placed on or before 3pm on Wednesday 20th December. We cannot guarantee delivery of these orders pre-Christmas as we are reliant on our couriers, but will use our best endeavours to get orders placed on this date out to you before Christmas. For full details of our festive delivery and opening times click here
Please note: online orders placed after 3pm on Friday 22nd December will not be dispatched until the New Year. For full details of our festive delivery and opening times click here