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There's no such thing as a all-in-one fertiliser. Reason being imho, that it's impossible to blend all nutrients required by plants into one product and keep it stable (aka no chemical reactions rendering the product useless). Also, every tank is unique in terms of nutrient requirement and related quantities.
Tetra's Florapride has been used by some people here, they'll comment I expect.
You basically need a source of nitrogen (nitrogen from fish is almost always never enough for CO2-enriched tanks), potassium, phosphorous and trace elements. Calcium and magnesium issues are rare.
There are a number of fertilisation regimes to go about. Dennerle is a good regime to follow, provided you have the money, tried and tested. Most of us go for dry-dosing following the Estimative Index method (link in the Informative Links), also tried and tested. Some have hybrid fert regimes. Go for what works for you.
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