"decided on using" is grammatically correct and can be used in written English.
This phrase is typically used when discussing a decision that was made to use something or follow a certain course of action. Example: After much consideration, I decided on using the new software for our project.
I decided on using an almond sour cream cake, adapted from "The Cake Bible" by Rose Levy Beranbaum, as the base.
We decided on using a deterministic, straightforward, algorithm to fusion.
They decided on using 100percentt cotton jersey, so the clothes will hold up and become wardrobe staples.
An international symposium was held in May 2009, where the attendees decided on using all applicable rules that had been defined for the RELM experiment (Schorlemmer and Gerstenberger, 2007; Schorlemmer et al., 2007).
Ewing's design was met with a poor response from the City Art Commission, and Rohm and Haas decided on using a leading architect and approached Pietro Belluschi.
Having concern that the grass of the stadium floor would affect the projections, LMG decided on using Heavy Knit Bright White fabric from All Access.
Since my company encompasses the entirety of my name, I sat for a while before deciding on using my initials within the domain name (even still, it's a little long for my liking).
"And for that reason amongst others we did decide on using a Russian accent, even though we had to drag along some of our financial backers who felt it was a dangerous thing to do".
Timberlake and Bayer enlisted American actress Scarlett Johansson after deciding on using "real" actors.
Deciding on using the subject of Pokémon after considering several possibilities such as Grand Theft Auto and Dragon Ball Z, the producers were surprised by fan reaction to the material.
Decide on using extruded polystyrene.
