It depends on the product. Hydroponic plants take up nutrients directly from water, so the fertilizer must dissolve fully and be designed for solution feeding. Many garden fertilizers are not made for this and can leave residue or clog equipment.
What to Look For
- A label that says it is made for hydroponics or solution feeding.
- Clear mixing instructions, with the strength for each growth stage.
- Nutrients listed on the label, so you can see what the solution contains.
Avoid Guessing
Mixing a stronger solution than the label recommends can burn roots and leaves. If you are unsure whether a product suits solution feeding, check with the manufacturer before using it.
Related guide: Nutrients.
