Uni-Gro Vermiculite Soil Additive - 12qt - Bag - Ready-to-Use Growing Environment It has an accessory vacuum

It has an accessory vacuum port for use with accessory items such as vacuum canisters and bottle stoppers

easy to install

FoxFarm also add humic acid

The Evolution RO1000 and Merlin Garden Pro systems need two (2) membranes

this pump operates smoothly and efficiently

Uni-Gro Vermiculite Soil Additive - 12qt - Bag - Ready-to-Use Growing Environment It has an accessory vacuumUni Gro Vermiculite is a soil additive that uses its accordion like particles to amend soil by retaining water, improving aeration and prolonging nutrient release. Its ability to retain both air and water makes vermiculite ideal for conditioning container soils. Vermiculite can also be used for seed germination, bulb storage and flower arranging.