Fertilizer for indoor plants with self watering pots

[salilsurendran]

Hello,
I have a no. of indoor plants in self watering containers like this one. I was wondering as to what fertilizers can be mixed with water to feed these plants?

[evtubbergh]

A fish or seaweed emulsion is honestly the best mild fertiliser for watering in. Use it at a lower dosage than usual and you should have very happy plant! Someone else will have to help with a brand but here the most common is Seagro.