Botanicare Reservoir Lid -- 40 Gallon Resevoir Lid - White Water Treatment + Filters + Tanks The dual-ball bearings hold up

The dual-ball bearings hold up to warm

which incorporates 22 mm diameter steel poles

RDWC and Other Recirculating Hydroponics Systems

Precision and Accuracy: The OnePen provides fast and precise readings down to two decimal places

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Botanicare Reservoir Lid -- 40 Gallon Resevoir Lid - White Water Treatment + Filters + Tanks The dual-ball bearings hold upMade in the USA using renewable solar energy. Made with recycled and recyclable materials. BPA free. Designed for excellent performance and easy maintenance, Botanicare's redesigned Premium Reservoirs are exceptionally durable, and are true gallon capacity plus extra room for aeration. They include front and back bulkhead access ports to accommodate pump lines, and allow multiple reservoirs to be joined in line or side by side. Formed from durable ABS