General Hydroponics MaxiGro vs Supply Solutions Calcium Nitrate 15.5-0-0

MaxiGro is the balanced all-round vegetative feed: 10-5-14 with secondary and micronutrients, pH-buffered, and a long track record with hydroponic and soil growers. Calcium nitrate is a single-purpose supplement: 15.5-0-0 plus 19% calcium, best used to fix calcium problems like blossom end rot or to push nitrate nitrogen in a two-part program. Buy MaxiGro if you want one powder that covers the vegetative stage. Buy calcium nitrate if you already have a base feed and need calcium or a fast nitrogen top-up.

• Choose the MaxiGro if you want a complete, pH-buffered vegetative nutrient in one soluble powder for seedlings, cuttings and microgreens.
• Choose the Supply Solutions Calcium Nitrate if you need a water-soluble calcium and nitrate nitrogen source to prevent blossom end rot or supplement an existing feed program.