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PCM Starter block is made from 100% coir fiber without fine dust particles and its compressed to a square disc and packed in a biodegradable cellulous sack
It has both Federal and California registrations as a fungicide and miticide on 51 crops
Exempt from the Maximum Residue Levels (MRLs) requirements
preventing efficient photosynthesis
40/60 mm cutting capacity
Hydrofarm Black & White Grow Bag- 10 Gallon (Case of 20 Packs) black/black PCM Starter block is madeWhite Black Grow Bags This update to our classic Hydrofarm grow bags features a new durable white plastic outer layer so you can write details like plant type, planting dates and growing notes, right on the bag! The white surface also reflects light, helping keep plants' roots cooler. These bags are a great low cost alternative to plastic pots used by greenhouse growers. And as always, they're made from a specially formulated plastic that provides for