My thought of hps mix comes from the massive yields my friend has using hps1k overclock.
You have two 260 kits right? What did you pull with them?
By overclock you mean he has something like a double ended gavita that runs at 1150 watts? What did he pull with that? In what size space, on how long of veg time? And does he supplement co2?
A 400 watt hps is pretty much the least efficient of the hid family. If you were going to do anything I wouldn’t suggest that.
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