Similar to: Jack's Nutrients Cal Nit Part B

Top Picks

Jack's Nutrients Part B Calcium Nitrate
Top Pick

Best reliable mineral supplement for serious hydroponic growers.

This is the gold standard for growers who want total control over their feeding regimen. By separating calcium and nitrogen from the rest of your nutrient profile, you gain the precision needed for professional-grade hydroponic results, though it does require a bit more attention to your mixing routine.

Water Soluble

Hydroponic Ready

Concentrated

Customizable

Jack's Cal Nit
Runner-Up

Best calcium supplement for growers using two-part nutrient feeding systems.

This is the gold standard for growers who demand total control over their nutrient profile. By separating calcium and nitrate, you gain the precision needed for explosive growth, though it requires the extra step of managing a two-part feeding system.

Soluble Calcium

Two-Part System

Nitrate Nitrogen

Pure Ingredients

Best nutrient solution for professional growers managing peat-based ornamental crops.

This is the gold standard for growers battling soft water who need to keep plants compact and vibrant. By packing three types of chelated iron into a perfectly soluble formula, it trades the simplicity of all-in-one pellets for the precision control required to achieve professional-grade color and structural health.

Calcium & Magnesium

Compact Growth

Black Iron

Water Soluble

Best nitrogen supplement for gardeners seeking vigorous, healthy plant growth.

Best nutrient supplement for gardeners preventing blossom end rot and tip burn.

Best professional grade fertilizer for growers using peat based potting mixes.

Best bloom-boosting formula for gardeners wanting vibrant flowers and larger yields.

Best high-phosphorus fertilizer for maximizing cannabis and hemp flowering yields.

Best high performance fertilizer for flower enthusiasts seeking maximum blooms.