How to get up to 1,5 GPW with basic system and 600w HPS

[Kvakos]

@Kvakos

Rest of the setup is homemade DRIP system with two really cheap pumps
2500l/h and circulation pump 1000l/h
2 valves,2 knees,1 T-plug , 1 fast plug to water hose

combination of 2 valves and fast plug enables you to

Drain water, fill tank with water, circulate water and regulate water flow.

Yeap,for circulation