Tide & Thrive can be used on many indoor plants as well as outdoor pots and containers.
Mixing a small batch
For houseplants, mix a small quantity: 2ml in a 1-litre jug of water. Water around the base of the plant.
Tailor to the plant
Always follow the label directions and tailor feeding to the individual plant; some houseplants need very little feeding, especially outside their growing season.
A 1-litre jug and a 2ml measure are all you need, so a little goes a long way on the windowsill.
Related: how to use · 5L size