I don't know anything about it, but this is from the website:
How to use it?
Alg·A·Mic is a revitalising product that contains a low level of NPK (Nitrogen, Phosphorus and Potassium) – making it impossible to overdose.
It can be added to every substrate during the flowering and growing period.
Our advice is to measure a 1-4ml dose of Alg·A·Mic per 1 litre of water, but follow our official Nutrient Schedule for the best results.
Looks like it's expensive and un-needed.