Bubble Magic Tea Bag Size:Large (15.75"x21.5") It can automatically control humidity

It can automatically control humidity and temperature with four easy settings

Resistant to corrosion

The chelated calcium in Plant Amp is highly soluble

Product Description: The high-airflow ventilator fan is designed to control temperature and humidity levels while expelling odors and stale air from areas in your home like your crawlspace

worm castings some black leaf mold I bought from the local 'worm guy'

Bubble Magic Tea Bag Size:Large (15.75"x21.5") It can automatically control humidityDurable, easy to clean, and affordable brew bags! Bubble Magic Tea Bags provide ease of use and deliver on results, every time. With their proven closure system you can now brew with confidence. The nylon handle and clip system also provide versatility for attaching the tea bag to a piece of rope, zip tie, or any other method of fastener for easy retrieval. Bubble Magic Tea Bags come in two sizes, Small for use in brewers up to 15 gallons, and Large