Hydroponics has become more popular especially with the invention of the aerogarden systems, like AeroGarden. DIY home hydroponic grow systems are also popular, as are Kratky methods. All of these systems require hydroponic fertilizer which is quite a bit more expensive than regular soluble fertilizer. It begs the question, can you use regular fertilizer in place of hydroponic fertilizer? What makes hydroponic fertilizer special and what should you be looking for when you buy them?
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