What is ammonia/ammonium? Ammonia is excreted by fish and when it is allowed to build up in...
Our price: £6.25
Our price: £6.25
What is pH? – pH is the measure of acidity or alkalinity of water. pH7 is neutral, above pH 7 is ...
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Our price: £4.29
What is nitrate? – Nitrite is oxidised into Nitrate (chemical symbol NO3) by nitrobacter, filtrat...
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Our price: £7.04
What is nitrite? – Nitrite, (chemical formula NO2) is formed when organic materials decompose in ...
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Our price: £5.47







