I have a 25 gallon tank with 2 Orandas and some drift wood apart from a few plants. I would like to add this home made fertiliser to help my plants to grow.

1. 1/4 cup of potassium sulphate
2. 1/4 cup of epsom salt (magnesium sulphate)
3. 1/8 cup of potassium nitrate (salt peter)
Then put this into a 750ml bottle and keep in a cool place. Sometimes crystals may form if its in the fridge so I add a half tsp of muriatic acid and store it on my shelf.

 Add 1 tsp of this for each 5 gallons of aquarium water on startup.

What I want to know is that will adding of this in the aquarium have any adverse affect on my fishes or the overall condition of the aquarium.

Thanks & Regards.
Saugata