Fertilizer for aroids and corms/bulbs of alocasia, caladium, hyacinth, etc.

Explain it to me like I’m 5 and don’t be mean to me pls. I need fertilizer I can use in LECA, and for use with aroids/ houseplant water props. For the bulbs I’m planning on buying the “forced grow” vases and using the fertilizer. I don’t need perfect ratios and detailed science. Something that works decent for flowers and houseplants alike, preferably, that won’t kill the roots or make the water gross. Photo for tax.