Tessenderlo Kerley CaTs: Soluble Calcium Thiosulfate Liquid Fertilizer (30 Gallon)
Tessenderlo Kerley CaTs (30 Gallon) is a soluble calcium thiosulfate liquid fertilizer carrying 10% calcium and 10% sulfur in a clear, chloride-free solution. The thiosulfate form matters because it keeps the calcium fully soluble in solution and bypasses the binding issues that make gypsum and calcium nitrate problematic in certain irrigation contexts. Calcium is non-negotiable for cell wall development, active nutrient transport across root membranes, and the structural integrity of new growth. Sulfur drives the synthesis of sulfur-containing amino acids like cysteine and methionine that feed protein building throughout the plant. Because the formula is chloride-free, it slots into sensitive crops where sodium and chloride load has to be managed carefully.
Applications in Fertigation, Soil Amendment, and Drip Irrigation
CaTs applies through drip irrigation, fertigation systems, and as a soil amendment for sodic soils where calcium is needed to displace sodium from the exchange sites. The 30-gallon drum is the working-scale size for commercial growers treating multi-acre plots or running continuous fertigation at significant volume. For smaller operations, CaTs is available in 2.5-gallon jugs. The 30-gallon format fits the grower who's moved past jug-scale buying and wants a drum that lasts a meaningful stretch of the season without frequent restocking.
Key Features
- 10% Calcium, 10% Sulfur: Significant calcium contribution plus sulfur for cell wall development, nutrient transport, and amino acid synthesis.
- Fully Soluble Thiosulfate Form: Stays in solution in the drum and in the irrigation line without precipitating out the way gypsum or Ca nitrate can.
- Chloride-Free Formula: Suitable for sensitive crops and sodium-managed programs where chloride load must be kept low.
- Fertigation and Drip Compatible: Applies cleanly through drip irrigation and fertigation systems without clogging emitters or leaving residue.
- 30-Gallon Working Drum: Production-scale volume for commercial growers running continuous fertigation or amending sodic soil at acreage.