For a twin pack alternative to IONIC, Growth Technology offer GreenHaze Bloom. This solution was initially developed for NFT systems which is a very demanding application. It has proven its worth over many years and is used now in many different cultivation systems.
GreenHaze Bloom has an enhanced level of potassium, expressed as a ratio against the nitrogen content. It is a solution designed to deliver fragrant blooms and heavy harvests.
The Green Haze infosheet here gives more information on usage guidelines.