Current Culture Lid with Single 5.5" Hole and Porthole Cover Lid Option:UC Epicenter Lid you can purchase a replacement

you can purchase a replacement probe separately

chemical resistant and leak-proof plastic

Eliminates the need for “Type A and B” feeding programs

and a large 22” x 22” x 4” stainless steel vacuum chamber best define this no-nonsense workhorse

Current Culture Lid with Single 5.5" Hole and Porthole Cover Lid Option:UC Epicenter Lid you can purchase a replacementThe CCH2O module lid was designed for ease of use and built to last. Structurally reinforced ribbing provides strength for big trees and a secure fit on the 8 and 13 gallon growth modules. Solid white, non translucent ABS construction prevents light penetration. The quick access port hole allows for easy root viewing and includes an air inlet finger holes for hoses to easily pass through. Made in California. Comes standard with all Under Current