AC Infinity Refillable Carbon Filter 4" Kit, With Charcoal Refill pH Up & pH Down Add three drops of pH

Add three drops of pH Test Indicator to the sample

Use during the vegetative growth stage to support foliage

Mixing Order: Add BioThrive Bloom to fresh water first and stir thoroughly

A dependable soil amendment for organic gardening that is safe to use around people

Optimized for fast-growing plants that benefit from strong drainage

AC Infinity Refillable Carbon Filter 4" Kit, With Charcoal Refill pH Up & pH Down Add three drops of pHAC Infinity Refillable Carbon Filter 4" Kit, With Charcoal Refill Reusable carbon filter features a patented design that eliminates the need to replace entire filters. Includes one refill to match the filtration capacity of two standard 4 carbon filters while costing less. Removable twist off flanges support easy, tool free refilling using the included funnel and scoop. Larger chamber is lab tested to block odors as effectively as standard filters