Grow Tray The trays are ideal for use with clay grow rock, rockwool or pots filled with a soilless grow substrate. Grow TrayThe trays are ideal for use with clay grow rock, rockwool or pots filled with a soilless grow substrate. The hydroponics trays are made of thick, durable, high-impact ABS plastic,smooth plastic surface makes it easy to clean the trays, and large drain channels allow water to ...
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