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suitable for various gardening methods
When cold outdoor temperatures hit
pair it alongside increasing CO2 for maximum results
prevents common Ca and Mg issues like yellowing leaves
GAS 4 AMP Pro Step Controller CO2 Sensor suitable for various gardening methodsG. A. S 4 AMP Pro Step Controller Simple, Silent Fan Speed Control The G. A. S 4 AMP Pro Step Controller gives you easy, reliable control over your extraction fan speed helping you dial in your environment and keep noise levels down, without complex settings or noisy fans. If you just want to manually adjust fan speed and maintain consistent airflow, the G. A. S 4 AMP Pro Step Controller is one of the best ways to do it. Its ideal for growers running